Repository: xpbob/CrashAnalysis
Branch: master
Commit: 934510dea770
Files: 22
Total size: 24.8 KB

Directory structure:
gitextract_od_bwa0o/

├── CrashAnalysis-1.0-SNAPSHOT.jar
├── README.md
├── pom.xml
└── src/
    └── main/
        └── java/
            └── com/
                └── xp/
                    ├── Entry.java
                    ├── GuiLayout.java
                    ├── checker/
                    │   ├── CheckerInterface.java
                    │   ├── CompileChecker.java
                    │   ├── DefaultChecker.java
                    │   ├── JVMChecker.java
                    │   └── MemoryChecker.java
                    ├── element/
                    │   ├── Frame.java
                    │   ├── ProblemFrame.java
                    │   ├── ProcessFrame.java
                    │   ├── SystemFrame.java
                    │   └── ThreadFrame.java
                    ├── handler/
                    │   ├── CommonHandler.java
                    │   ├── ProblemFrameHandler.java
                    │   ├── ProcessFrameHandler.java
                    │   ├── SystemFrameHandler.java
                    │   └── ThreadFrameHandler.java
                    └── util/
                        ├── Common.java
                        └── ReaderUtil.java

================================================
FILE CONTENTS
================================================

================================================
FILE: README.md
================================================
# CrashAnalysis

## 功能介绍  
这是一个jvm crash分析工具，主要分析jvm crash的原因，以及常见的解决手段。
## 使用方式  
java -jar CrashAnalysis-1.0-SNAPSHOT.jar ${hs_err_pid.log}   
${hs_err_pid.log} 是jvm crash后生成的日志。  
## 效果
分析完成后会展示出来诊断信息，其他信息都是用来验证诊断信息的。

================================================
FILE: pom.xml
================================================
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.xp</groupId>
    <artifactId>CrashAnalysis</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.target>1.8</maven.compiler.target>
        <maven.compiler.source>1.8</maven.compiler.source>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>com.xp.Entry</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

================================================
FILE: src/main/java/com/xp/Entry.java
================================================
package com.xp;

import com.xp.checker.*;
import com.xp.handler.*;

import javax.swing.*;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;


public class Entry {
    public static void main(String[] args) throws IOException {
        String filePath = args[0];

        ReadFile(filePath, buildHandler());

        showWithGui(getLayout(buildChecker()));


    }

    public static void showWithGui(GuiLayout guiLayout) {
        if (guiLayout == null) {
            guiLayout = new DefaultChecker().check();
        }
        JFrame  f =new JFrame ();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JTabbedPane tp = new JTabbedPane();
        f.setLayout(null);
        {
            JPanel jPanel = new JPanel();
            JTextArea  show = new JTextArea ();
            show.setText(guiLayout.getAdvice());
            show.setLineWrap(true);
            show.setEditable(false);
            show.setColumns(100);
            show.setAlignmentX(0);
            jPanel.add(show);
            tp.add(jPanel);
            tp.setTitleAt(0,"诊断信息");
        }
        int count =1;
        List<com.xp.element.Frame> showList = guiLayout.getShowList();
        for (com.xp.element.Frame frame : showList) {
            JPanel jPanel = new JPanel();
            JTextArea  tmp = new JTextArea ();
            tmp.setLineWrap(true);
            tmp.setEditable(false);
            tmp.setColumns(100);
            tmp.setRows(50);
            tmp.setAlignmentX(0);
            tmp.setText(frame.toString());
            jPanel.add(tmp);
            tp.add(jPanel);
            tp.setTitleAt(count++,frame.getFrameInfo());
        }
        f.setContentPane(tp);
        f.pack();
        f.setVisible(true);



    }


    public static CommonHandler buildHandler() {
        ProblemFrameHandler problemFrameHandler = new ProblemFrameHandler();
        ThreadFrameHandler threadFrameHandler = new ThreadFrameHandler();
        SystemFrameHandler systemFrameHandler = new SystemFrameHandler();
        ProcessFrameHandler processFrameHandler = new ProcessFrameHandler();
        problemFrameHandler.setNext(threadFrameHandler);

        threadFrameHandler.setNext(processFrameHandler);
        processFrameHandler.setNext(systemFrameHandler);
        return problemFrameHandler;
    }

    public static List<CheckerInterface> buildChecker() {
        List<CheckerInterface> checkerLists = new ArrayList<>();
        checkerLists.add(new MemoryChecker());
        checkerLists.add(new CompileChecker());
        checkerLists.add(new JVMChecker());

        return checkerLists;
    }

    public static GuiLayout getLayout(List<CheckerInterface> checkerLists) {
        GuiLayout guiLayout = null;
        for (CheckerInterface checkerList : checkerLists) {
            guiLayout = checkerList.check();
            if (guiLayout != null) {
                return guiLayout;
            }
        }


        return guiLayout;
    }

    public static void ReadFile(String filePath, CommonHandler handler) throws IOException {
        try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) {
            String line = null;
            while ((line = reader.readLine()) != null) {
                handler.getMessage(line, reader);

            }
        }

    }


}


================================================
FILE: src/main/java/com/xp/GuiLayout.java
================================================
package com.xp;

import com.xp.element.Frame;

import java.util.List;

public class GuiLayout {
    private String advice;
    private List<Frame> showList;

    public String getAdvice() {
        return advice;
    }

    public void setAdvice(String advice) {
        this.advice = advice;
    }

    public List<Frame> getShowList() {
        return showList;
    }

    public void setShowList(List<Frame> showList) {
        this.showList = showList;
    }
}


================================================
FILE: src/main/java/com/xp/checker/CheckerInterface.java
================================================
package com.xp.checker;

import com.xp.GuiLayout;

public interface CheckerInterface {
    public GuiLayout check();

}


================================================
FILE: src/main/java/com/xp/checker/CompileChecker.java
================================================
package com.xp.checker;

import com.xp.GuiLayout;
import com.xp.element.*;
import com.xp.util.Common;

import java.util.ArrayList;
import java.util.List;

public class CompileChecker implements CheckerInterface {

    @Override
    public GuiLayout check() {
        String problemInfo = ProblemFrame.frame.getProblemInfo();
        if (problemInfo != null && (problemInfo.contains("0x00")||problemInfo.contains(" J "))) {
            return buildLayout();
        }
        return null;
    }

    public GuiLayout buildLayout(){

        StringBuilder sb =new StringBuilder();
        sb.append("这是一个解释器的问题，就是jvm把字节码转化成机器码出错了。");
        sb.append(Common.NEXT_LINE);
        sb.append("引起这种情况的原因有很多，一般都是jdk的bug");
        sb.append(Common.NEXT_LINE);
        sb.append("可以更换不同的jvm模式");
        sb.append(Common.NEXT_LINE);
        sb.append("例如-XInt,纯解释模式");
        sb.append(Common.NEXT_LINE);
        sb.append("在运行过程信息中有编译情况，可以查看具体编译到谁出错了");
        sb.append(Common.NEXT_LINE);
        sb.append("可以通过排除编译这些类来试试");
        sb.append(Common.NEXT_LINE);


        GuiLayout layout =new GuiLayout();
        layout.setAdvice(sb.toString());
        List<Frame> frameList=new ArrayList<>();
        frameList.add(ProblemFrame.frame);
        frameList.add(ThreadFrame.frame);
        frameList.add(ProcessFrame.frame);
        frameList.add(SystemFrame.frame);
        layout.setShowList(frameList);
        return layout;

    }


}


================================================
FILE: src/main/java/com/xp/checker/DefaultChecker.java
================================================
package com.xp.checker;

import com.xp.GuiLayout;
import com.xp.element.*;

import java.util.ArrayList;
import java.util.List;

public class DefaultChecker implements CheckerInterface {
    @Override
    public GuiLayout check() {
        return buildLayout();
    }
    public GuiLayout buildLayout(){
        GuiLayout layout =new GuiLayout();
        layout.setAdvice("程序没有判断出问题，请联系作者。");
        List<Frame> frameList=new ArrayList<>();
        frameList.add(ProblemFrame.frame);
        frameList.add(ThreadFrame.frame);
        frameList.add(ProcessFrame.frame);
        frameList.add(SystemFrame.frame);
        layout.setShowList(frameList);
        return layout;
    }
}


================================================
FILE: src/main/java/com/xp/checker/JVMChecker.java
================================================
package com.xp.checker;

import com.xp.GuiLayout;
import com.xp.element.*;
import com.xp.util.Common;

import java.util.ArrayList;
import java.util.List;

public class JVMChecker implements CheckerInterface {
    @Override
    public GuiLayout check() {

        String exceptionInfo = ProblemFrame.frame.getExceptionInfo();
        if (exceptionInfo != null) {
            return buildLayout();
        }

        return null;
    }

    public GuiLayout buildLayout() {
        StringBuilder sb =new StringBuilder();
        sb.append("这是jvm的错误导致的问题");
        sb.append(Common.NEXT_LINE);
        sb.append("请根据后面给的问题点来进行分析，需要根据openjdk的实现来帮助分析问题。");
        sb.append(Common.NEXT_LINE);
        sb.append("线程信息中的上下文也会告诉你代码执行到什么地方出的错");
        sb.append(Common.NEXT_LINE);
        sb.append("在运行过程信息栏目中查看内部错误信息。");
        sb.append(Common.NEXT_LINE);
        sb.append("这种错误有两个大方向可以排查");
        sb.append(Common.NEXT_LINE);
        sb.append(" 1,操作系统方面：是否是系统资源问题或者是参数问题导致");
        sb.append(Common.NEXT_LINE);
        sb.append(" 2,有第三方动态库的调用，导致错误");
        sb.append(Common.NEXT_LINE);
        sb.append("如果不是以上情况，有可能是jdk的bug，换个系统，或者换个jdk吧。");
        sb.append(Common.NEXT_LINE);

        GuiLayout layout =new GuiLayout();
        layout.setAdvice(sb.toString());
        List<Frame> frameList=new ArrayList<>();
        frameList.add(ProblemFrame.frame);
        frameList.add(ThreadFrame.frame);
        frameList.add(ProcessFrame.frame);
        frameList.add(SystemFrame.frame);
        layout.setShowList(frameList);
        return layout;


    }
}


================================================
FILE: src/main/java/com/xp/checker/MemoryChecker.java
================================================
package com.xp.checker;

import com.xp.GuiLayout;
import com.xp.element.Frame;
import com.xp.element.ProblemFrame;
import com.xp.element.SystemFrame;
import com.xp.element.ThreadFrame;
import com.xp.util.Common;

import java.util.ArrayList;
import java.util.List;

public class MemoryChecker implements CheckerInterface {
    @Override
    public GuiLayout check() {
        String problemInfo = ProblemFrame.frame.getProblemInfo();
        if(problemInfo.contains("Native memory allocation")){
            return buildLayout();
        }
        return null;
    }

    public GuiLayout buildLayout(){
        StringBuilder sb=new StringBuilder();
        sb.append("这是一个内存申请问题。");
        sb.append(Common.NEXT_LINE);
        sb.append("jvm默认提供一些解决方案");
        sb.append(Common.NEXT_LINE);
        sb.append("  Reduce memory load on the system");
        sb.append(Common.NEXT_LINE);
        sb.append("  Increase physical memory or swap space");
        sb.append(Common.NEXT_LINE);
        sb.append("  Check if swap backing store is full");
        sb.append(Common.NEXT_LINE);
        sb.append("  Use 64 bit Java on a 64 bit OS");
        sb.append(Common.NEXT_LINE);
        sb.append("  Decrease Java heap size (-Xmx/-Xms)");
        sb.append(Common.NEXT_LINE);
        sb.append("  Decrease number of Java threads");
        sb.append(Common.NEXT_LINE);
        sb.append("  Decrease Java thread stack sizes (-Xss)");
        sb.append(Common.NEXT_LINE);
        sb.append("  Set larger code cache with -XX:ReservedCodeCacheSize=");
        sb.append(Common.NEXT_LINE);
        sb.append("可以根据这些手段进行排查，下面的模版会提供系统内存使用的情况，可以做参考。");
        sb.append(Common.NEXT_LINE);
        sb.append("如果发现物理内存充足，swap也充足，那可能是系统的参数限制了内存申请。");
        sb.append(Common.NEXT_LINE);
        sb.append("例如/proc/sys/vm/max_map_count");
        sb.append(Common.NEXT_LINE);
        sb.append("也或者是jdk版本和系统版本不对，导致内存申请失败");
        sb.append(Common.NEXT_LINE);
        sb.append("如果想查具体原因，需要根据jvm源码和下面的堆栈进行分析");
        GuiLayout layout=new GuiLayout();
        layout.setAdvice(sb.toString());
        List<Frame> frames=new ArrayList<>();
        frames.add(ProblemFrame.frame);
        frames.add(SystemFrame.frame);
        frames.add(ThreadFrame.frame);
        layout.setShowList(frames);
        return layout;
    }


}


================================================
FILE: src/main/java/com/xp/element/Frame.java
================================================
package com.xp.element;

public interface Frame {
    String getFrameInfo();
}


================================================
FILE: src/main/java/com/xp/element/ProblemFrame.java
================================================
package com.xp.element;

import com.xp.util.Common;

public class ProblemFrame implements Frame{
    public static ProblemFrame frame = new ProblemFrame();
    private String problemInfo;


    private String exceptionInfo;

    private ProblemFrame() {
    }

    public void setProblemInfo(String problemInfo) {
        this.problemInfo = problemInfo;
    }

    public String getProblemInfo() {
        return problemInfo;
    }


    public String getExceptionInfo() {
        return exceptionInfo;
    }

    public void setExceptionInfo(String exceptionInfo) {
        this.exceptionInfo = exceptionInfo;
    }


    @Override
    public String toString() {
        StringBuilder sb=new StringBuilder();
        if(problemInfo!=null){
            sb.append("问题模块：");
            sb.append(Common.NEXT_LINE);
            sb.append(problemInfo);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);
        }
        if(exceptionInfo!=null){
            sb.append("异常模块：");
            sb.append(Common.NEXT_LINE);
            sb.append(exceptionInfo);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);

        }


        return sb.toString();
    }

    @Override
    public String getFrameInfo() {
        return "可能的问题点";
    }
}


================================================
FILE: src/main/java/com/xp/element/ProcessFrame.java
================================================
package com.xp.element;

import com.xp.util.Common;

public class ProcessFrame implements Frame {
    public static ProcessFrame frame = new ProcessFrame();


    private String exceptions;

    private String compilation;

    private String events;

    private ProcessFrame() {
    }


    public String getExceptions() {
        return exceptions;
    }

    public void setExceptions(String exceptions) {
        this.exceptions = exceptions;
    }

    public String getCompilation() {
        return compilation;
    }

    public void setCompilation(String compilation) {
        this.compilation = compilation;
    }

    public String getEvents() {
        return events;
    }

    public void setEvents(String events) {
        this.events = events;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        if (exceptions != null) {
            sb.append("jvm异常信息：");
            sb.append(Common.NEXT_LINE);
            sb.append(exceptions);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);
        }
        if (compilation != null) {
            sb.append("编译事件：");
            sb.append(Common.NEXT_LINE);
            sb.append(compilation);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);
        }
        if (events != null) {
            sb.append("事件信息：");
            sb.append(Common.NEXT_LINE);
            sb.append(events);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);
        }
        return sb.toString();
    }

    @Override
    public String getFrameInfo() {
        return "运行过程信息";
    }
}


================================================
FILE: src/main/java/com/xp/element/SystemFrame.java
================================================
package com.xp.element;

import com.xp.util.Common;

public class SystemFrame implements Frame {
    public static SystemFrame frame = new SystemFrame();

    private String memory;

    private SystemFrame() {

    }

    public String getMemory() {
        return memory;
    }

    public void setMemory(String memory) {
        this.memory = memory;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        if (memory != null) {
            sb.append("机器内存信息：");
            sb.append(Common.NEXT_LINE);
            sb.append(memory);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);
        }
        return sb.toString();
    }

    @Override
    public String getFrameInfo() {
        return "系统信息";
    }
}


================================================
FILE: src/main/java/com/xp/element/ThreadFrame.java
================================================
package com.xp.element;

import com.xp.util.Common;

public class ThreadFrame implements Frame {
    public static ThreadFrame frame = new ThreadFrame();

    private String currrentTheadInfo;
    private String stack;

    private ThreadFrame() {
    }

    public String getCurrrentTheadInfo() {
        return currrentTheadInfo;
    }

    public void setCurrrentTheadInfo(String currrentTheadInfo) {
        this.currrentTheadInfo = currrentTheadInfo;
    }

    public String getStack() {
        return stack;
    }

    public void setStack(String stack) {
        this.stack = stack;
    }

    @Override
    public String toString() {

        StringBuilder sb = new StringBuilder();
        if (currrentTheadInfo != null) {
            sb.append("正在执行的线程信息：");
            sb.append(Common.NEXT_LINE);
            sb.append(currrentTheadInfo);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);
        }
        if (stack != null) {
            sb.append("对应的堆栈信息：");
            sb.append(Common.NEXT_LINE);
            sb.append(stack);
            sb.append(Common.NEXT_LINE);
            sb.append(Common.LINE);
            sb.append(Common.NEXT_LINE);
        }
        return sb.toString();
    }

    @Override
    public String getFrameInfo() {
        return "线程信息";
    }
}


================================================
FILE: src/main/java/com/xp/handler/CommonHandler.java
================================================
package com.xp.handler;

import java.io.BufferedReader;

public abstract class CommonHandler {

    private CommonHandler next;


    public void getMessage(String info, BufferedReader reader){

        info = getMessageFromFile(info,reader);
        if(next!=null){
            next.getMessage(info, reader);
        }
    }
    protected abstract String getMessageFromFile(String info, BufferedReader reader);

    public CommonHandler getNext() {
        return next;
    }

    public void setNext(CommonHandler next) {
        this.next = next;
    }
}


================================================
FILE: src/main/java/com/xp/handler/ProblemFrameHandler.java
================================================
package com.xp.handler;

import com.xp.element.ProblemFrame;
import com.xp.util.Common;
import com.xp.util.ReaderUtil;

import java.io.BufferedReader;
import java.io.IOException;

public class ProblemFrameHandler extends CommonHandler {
    private CommonHandler next;
    private static final String FLAG = "#";


    @Override
    protected String getMessageFromFile(String info, BufferedReader reader) {
        if (info.contains(FLAG)) {
            try {
                do {
                    if(info.startsWith(Common.END_FLAG)) {
                        break;
                    }
                    if(info.contains("Native memory allocation")){
                        StringBuilder sb= new StringBuilder(info);
                        sb.append(Common.NEXT_LINE);
                        sb.append(ReaderUtil.readFrameEndWithBlankLine(reader));
                        ProblemFrame.frame.setProblemInfo(sb.toString());
                    }
                    if(info.contains("An unexpected error")){

                        ProblemFrame.frame.setExceptionInfo(ReaderUtil.readFrameLineWithLength(4,reader));
                        info=reader.readLine();
                    }
                    if(info.contains("A fatal error")){
                        ProblemFrame.frame.setExceptionInfo(ReaderUtil.readFrameLineWithLength(4,reader));
                        info=reader.readLine();
                    }

                    if (info.contains("Problematic frame")) {
                        ProblemFrame.frame.setProblemInfo(ReaderUtil.readFrameWithEnd("#", reader));
                    }


                } while ((info = reader.readLine()) != null);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return info;
    }
}


================================================
FILE: src/main/java/com/xp/handler/ProcessFrameHandler.java
================================================
package com.xp.handler;

import com.xp.element.ProcessFrame;
import com.xp.util.Common;
import com.xp.util.ReaderUtil;

import java.io.BufferedReader;
import java.io.IOException;

public class ProcessFrameHandler extends CommonHandler {
    @Override
    protected String getMessageFromFile(String info, BufferedReader reader) {
        if (info.contains("P R O C E S S")) {

            try {
                while ((info = reader.readLine()) != null) {

                    if (info.startsWith("Compilation events")) {
                        ProcessFrame.frame.setCompilation(ReaderUtil.readFrameEndWithBlankLine(reader));
                        info = reader.readLine();
                    }
                    if (info.startsWith("Internal exceptions ")) {
                        ProcessFrame.frame.setExceptions(ReaderUtil.readFrameEndWithBlankLine(reader));
                        info = reader.readLine();
                    }

                    if (info.startsWith("Events")) {
                        ProcessFrame.frame.setEvents(ReaderUtil.readFrameEndWithBlankLine(reader));
                        info = reader.readLine();
                    }

                    if (info.startsWith(Common.END_FLAG)) {
                        break;
                    }


                }

            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return info;
    }
}


================================================
FILE: src/main/java/com/xp/handler/SystemFrameHandler.java
================================================
package com.xp.handler;

import com.xp.element.SystemFrame;
import com.xp.util.ReaderUtil;

import java.io.BufferedReader;
import java.io.IOException;

public class SystemFrameHandler extends CommonHandler {
    @Override
    protected String getMessageFromFile(String info, BufferedReader reader) {
        if (info.contains("S Y S T E M")) {

            try {
                SystemFrame.frame.setMemory(ReaderUtil.readFrameContainsWord("Memory", reader));
                info = reader.readLine();

            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return info;


    }
}


================================================
FILE: src/main/java/com/xp/handler/ThreadFrameHandler.java
================================================
package com.xp.handler;

import com.xp.element.ThreadFrame;
import com.xp.util.Common;
import com.xp.util.ReaderUtil;

import java.io.BufferedReader;
import java.io.IOException;

public class ThreadFrameHandler extends CommonHandler {




    @Override
    protected String getMessageFromFile(String info, BufferedReader reader) {
        if (info.contains("T H R E A D")) {

            try {
                ThreadFrame.frame.setCurrrentTheadInfo(ReaderUtil.readFrameContainsWord("Current thread", reader));
                info = reader.readLine();
                do {
                    if(info.startsWith(Common.END_FLAG)) {
                        break;
                    }
                    if (info.startsWith("Stack")) {
                        StringBuilder sb = new StringBuilder();
                        sb.append(info);
                        sb.append(Common.NEXT_LINE);
                        sb.append(ReaderUtil.readFrameWithBlankCount(2,reader));
                        ThreadFrame.frame.setStack(sb.toString());

                    }

                } while ((info = reader.readLine()) != null);


            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return info;
    }
}


================================================
FILE: src/main/java/com/xp/util/Common.java
================================================
package com.xp.util;

public class Common {
    public static final String NEXT_LINE="\r\n";
    public static final String LINE="-------------------------------------------------------";
    public static final String END_FLAG="--";
}


================================================
FILE: src/main/java/com/xp/util/ReaderUtil.java
================================================
package com.xp.util;

import java.io.BufferedReader;
import java.io.IOException;

public class ReaderUtil {

    public static String readFrameLineWithLength(int length, BufferedReader reader) throws IOException {
        StringBuilder sb = new StringBuilder();
        String line = null;

        while ((line = reader.readLine()) != null) {
            if (line.trim().length() > length) {
                sb.append(line);
                while ((line = reader.readLine()) != null) {
                    if (line.trim().length() > length) {
                        sb.append(line);
                    }else {
                        break;
                    }
                }
                break;

            }

        }
        return sb.toString();

    }

    public static String readFrameContainsWord(String word, BufferedReader reader) throws IOException {
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            if (line.contains(word)) {
                sb.append(line);
                sb.append(Common.NEXT_LINE);
                break;
            }
        }
        return sb.toString();

    }

    public static String readFrameEndWithBlankLine(BufferedReader reader) throws IOException {

        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            if (line.trim().equals("")) {
                break;
            }
            sb.append(line);
            sb.append(Common.NEXT_LINE);

        }
        return sb.toString();

    }





    public static String readFrameWithEnd(String end, BufferedReader reader) throws IOException {

        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            if (line.trim().equals(end)) {
                break;
            }
            sb.append(line);
            sb.append(Common.NEXT_LINE);

        }
        return sb.toString();

    }

    public static String readFrameWithBlankCount(int count, BufferedReader reader) throws IOException {

        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            if (line.trim().equals("")) {
                count--;
                if(count==0){
                    break;
                }
            }
            sb.append(line);
            sb.append(Common.NEXT_LINE);

        }
        return sb.toString();

    }
}