Android之崩溃日志管理
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2022-06-19 21:47:04
文章大纲 一、Android崩溃日志管理简介二、崩溃日志管理实战三、项目源码下载 一、Android崩溃日志管理简介 1. 什么是android崩溃日志管理 开发中有些地方未注意可能造成异常抛出未能caught到，然后弹出系统对话框强制退出。这种交互不好，而且开发者也不能及时获取到底哪里出问题。因此 ......
文章大纲
一、android崩溃日志管理简介
二、崩溃日志管理实战
三、项目源码下载
一、android崩溃日志管理简介
1. 什么是android崩溃日志管理
开发中有些地方未注意可能造成异常抛出未能caught到，然后弹出系统对话框强制退出。这种交互不好，而且开发者也不能及时获取到底哪里出问题。因此我们可以使用android的uncaughtexceptionhandler来处理这种异常。
2. 操作逻辑
用户端（出现崩溃）
我们会封装一个通用的jar包，该jar包包括日志打印、捕获异常信息逻辑、网络传输、设置debug和release模式、获取本机的相关信息等，当出现异常时，将异常信息以文件方式保存在用户手机中，并且发送到后台，当后台接收成功时，自动删除用户手机的崩溃信息文件，若接收失败，在下次发生崩溃时，将历史发送失败的崩溃一同发送。
接收端（后台）
我们会编写一个地址，用于接收异常的具体信息，并储存在本地文件中，以此作为日志进行管理。
二、崩溃日志管理实战
1. 后台端
在该实战中，我以简单的servlet进行讲解，实际项目中，可以以ssm或spring boot等框架进行操作。
/**
* 接收崩溃信息，并进行打印（实际项目中，需要以文件形式归档）
* @author wxc
*
*/
public class test extends httpservlet {
public void doget(httpservletrequest request, httpservletresponse response)
throws servletexception, ioexception {
dopost(request, response);
}
public void dopost(httpservletrequest request, httpservletresponse response)
throws servletexception, ioexception {
//获取客户端传送过来的信息流
bufferedreader in=new bufferedreader(new inputstreamreader(request.getinputstream()));
stringbuilder sb = new stringbuilder();
string line = null;
while ((line = in.readline()) != null) {
//将信息流进行打印
system.out.println(line);
}
}
}
2. 客户端通用项目
网络请求相关的配置管理类：httpmanager.java
/**
*
* 网络请求相关的配置管理
*
* @author 吴晓畅
*
*/
public class httpmanager {
private static final int set_connection_timeout = 5 * 1000;
private static final int set_socket_timeout = 20 * 1000;
private static final string boundary = getboundry();// uuid.randomuuid().tostring();
private static final string mp_boundary = "--" + boundary;
private static final string end_mp_boundary = "--" + boundary + "--";
private static final string linend = "\r\n";
private static final string charset = "utf-8";
public static string uploadfile(string url, httpparameters params,
file logfile) throws ioexception{
httpclient client = gethttpclient();
httppost post = new httppost(url);
bytearrayoutputstream bos = null;
fileinputstream logfileinputstream = null;
string result = null;
try {
bos = new bytearrayoutputstream();
if(params != null){
string key = "";
for (int i = 0; i < params.size(); i++) {
key = params.getkey(i);
stringbuilder temp = new stringbuilder(10);
temp.setlength(0);
temp.append(mp_boundary).append(linend);
temp.append("content-disposition: form-data; name=\"").append(key)
.append("\"").append(linend + linend);
temp.append(params.getvalue(key)).append(linend);
bos.write(temp.tostring().getbytes());
}
}
stringbuilder temp = new stringbuilder();
temp.append(mp_boundary).append(linend);
temp.append(
"content-disposition: form-data; name=\"logfile\"; filename=\"")
.append(logfile.getname()).append("\"").append(linend);
temp.append("content-type: application/octet-stream; charset=utf-8").append(linend + linend);
bos.write(temp.tostring().getbytes());
logfileinputstream = new fileinputstream(logfile);
byte[] buffer = new byte[1024*8];//8k
while(true){
int count = logfileinputstream.read(buffer);
if(count == -1){
break;
}
bos.write(buffer, 0, count);
}
bos.write((linend+linend).getbytes());
bos.write((end_mp_boundary+linend).getbytes());
bytearrayentity formentity = new bytearrayentity(bos.tobytearray());
post.setentity(formentity);
httpresponse response = client.execute(post);
statusline status = response.getstatusline();
int statuscode = status.getstatuscode();
log.i("httpmanager", "返回结果为"+statuscode);
if(statuscode == httpstatus.sc_ok){
result = readhttpresponse(response);
}
} catch (ioexception e) {
throw e;
}finally{
if(bos != null){
try {
bos.close();
} catch (ioexception e) {
throw e;
}
}
if(logfileinputstream != null){
try {
logfileinputstream.close();
} catch (ioexception e) {
throw e;
}
}
}
return result;
}
private static string readhttpresponse(httpresponse response){
string result = null;
httpentity entity = response.getentity();
inputstream inputstream;
try {
inputstream = entity.getcontent();
bytearrayoutputstream content = new bytearrayoutputstream();
int readbytes = 0;
byte[] sbuffer = new byte[512];
while ((readbytes = inputstream.read(sbuffer)) != -1) {
content.write(sbuffer, 0, readbytes);
}
result = new string(content.tobytearray(), charset);
return result;
} catch (illegalstateexception e) {
// todo auto-generated catch block
e.printstacktrace();
} catch (ioexception e) {
// todo auto-generated catch block
e.printstacktrace();
}
return result;
}
private static httpclient gethttpclient() {
try {
keystore truststore = keystore.getinstance(keystore
.getdefaulttype());
truststore.load(null, null);
sslsocketfactory sf = new mysslsocketfactory(truststore);
sf.sethostnameverifier(sslsocketfactory.allow_all_hostname_verifier);
httpparams params = new basichttpparams();
httpconnectionparams.setconnectiontimeout(params, 10000);
httpconnectionparams.setsotimeout(params, 10000);
httpprotocolparams.setversion(params, httpversion.http_1_1);
httpprotocolparams.setcontentcharset(params, http.utf_8);
schemeregistry registry = new schemeregistry();
registry.register(new scheme("http", plainsocketfactory
.getsocketfactory(), 80));
registry.register(new scheme("https", sf, 443));
clientconnectionmanager ccm = new threadsafeclientconnmanager(
params, registry);
httpconnectionparams.setconnectiontimeout(params,
set_connection_timeout);
httpconnectionparams.setsotimeout(params, set_socket_timeout);
httpclient client = new defaulthttpclient(ccm, params);
return client;
} catch (exception e) {
// e.printstacktrace();
return new defaulthttpclient();
}
}
private static class mysslsocketfactory extends sslsocketfactory {
sslcontext sslcontext = sslcontext.getinstance("tls");
public mysslsocketfactory(keystore truststore)
throws nosuchalgorithmexception, keymanagementexception,
keystoreexception, unrecoverablekeyexception {
super(truststore);
trustmanager tm = new x509trustmanager() {
@override
public x509certificate[] getacceptedissuers() {
// todo auto-generated method stub
return null;
}
@override
public void checkservertrusted(x509certificate[] chain,
string authtype) throws certificateexception {
// todo auto-generated method stub
}
@override
public void checkclienttrusted(x509certificate[] chain,
string authtype) throws certificateexception {
// todo auto-generated method stub
}
};
sslcontext.init(null, new trustmanager[] { tm }, null);
}
@override
public socket createsocket() throws ioexception {
return sslcontext.getsocketfactory().createsocket();
}
@override
public socket createsocket(socket socket, string host, int port,
boolean autoclose) throws ioexception, unknownhostexception {
return sslcontext.getsocketfactory().createsocket(socket, host,
port, autoclose);
}
}
private static string getboundry() {
stringbuffer _sb = new stringbuffer();
for (int t = 1; t < 12; t++) {
long time = system.currenttimemillis() + t;
if (time % 3 == 0) {
_sb.append((char) time % 9);
} else if (time % 3 == 1) {
_sb.append((char) (65 + time % 26));
} else {
_sb.append((char) (97 + time % 26));
}
}
return _sb.tostring();
}
}
文件上传相关类：uploadlogmanager.java
package com.qihoo.linker.logcollector.upload;
import java.io.file;
import java.io.ioexception;
import java.util.logging.logger;
import com.qihoo.linker.logcollector.capture.logfilestorage;
import android.content.context;
import android.os.handler;
import android.os.handlerthread;
import android.os.looper;
import android.os.message;
import android.util.log;
/**
*
* @author 吴晓畅
*
*/
public class uploadlogmanager {
private static final string tag = uploadlogmanager.class.getname();
private static uploadlogmanager sinstance;
private context mcontext;
private handlerthread mhandlerthread;
private static volatile myhandler mhandler;
private volatile looper mlooper;
private volatile boolean isrunning = false;
private string url;
private httpparameters params;
private uploadlogmanager(context c){
mcontext = c.getapplicationcontext();
mhandlerthread = new handlerthread(tag + ":handlerthread");
mhandlerthread.start();
}
//初始化uploadlogmanager类
public static synchronized uploadlogmanager getinstance(context c){
if(sinstance == null){
sinstance = new uploadlogmanager(c);
}
return sinstance;
}
/**
* 执行文件上传具体操作
*
* @param url
* @param params
*/
public void uploadlogfile(string url , httpparameters params){
this.url = url;
this.params = params;
mlooper = mhandlerthread.getlooper();
mhandler = new myhandler(mlooper);
if(mhandlerthread == null){
return;
}
if(isrunning){
return;
}
mhandler.sendmessage(mhandler.obtainmessage());
isrunning = true;
}
//用于uploadlogfile方法调用的线程
private final class myhandler extends handler{
public myhandler(looper looper) {
super(looper);
// todo auto-generated constructor stub
}
@override
public void handlemessage(message msg) {
file logfile = logfilestorage.getinstance(mcontext).getuploadlogfile();
if(logfile == null){
isrunning = false;
return;
}
try {
string result = httpmanager.uploadfile(url, params, logfile);
log.i("upload", "服务端返回数据为"+result);
if(result != null){
boolean issuccess = logfilestorage.getinstance(mcontext).deleteuploadlogfile();
log.i("upload", "删除文件结果为"+issuccess);
}
} catch (ioexception e) {
// todo auto-generated catch block
e.printstacktrace();
}finally{
isrunning = false;
}
}
}
}
客户端崩溃日志文件的删除，保存等操作类：logfilestorage.java
文件保存在android/data/包名/log/下
package com.qihoo.linker.logcollector.capture;
import java.io.file;
import java.io.fileoutputstream;
import com.qihoo.linker.logcollector.utils.logcollectorutility;
import com.qihoo.linker.logcollector.utils.loghelper;
import android.content.context;
import android.util.log;
/**
*
* 客户端崩溃日志文件的删除，保存等操作
*
* @author 吴晓畅
*
*/
public class logfilestorage {
private static final string tag = logfilestorage.class.getname();
public static final string log_suffix = ".log";
private static final string charset = "utf-8";
private static logfilestorage sinstance;
private context mcontext;
private logfilestorage(context ctx) {
mcontext = ctx.getapplicationcontext();
}
public static synchronized logfilestorage getinstance(context ctx) {
if (ctx == null) {
loghelper.e(tag, "context is null");
return null;
}
if (sinstance == null) {
sinstance = new logfilestorage(ctx);
}
return sinstance;
}
public file getuploadlogfile(){
file dir = mcontext.getfilesdir();
file logfile = new file(dir, logcollectorutility.getmid(mcontext)
+ log_suffix);
if(logfile.exists()){
return logfile;
}else{
return null;
}
}
//删除客户端中崩溃日志文件
public boolean deleteuploadlogfile(){
file dir = mcontext.getfilesdir();
file logfile = new file(dir, logcollectorutility.getmid(mcontext)
+ log_suffix);
log.i("log",
logcollectorutility.getmid(mcontext)
+ log_suffix);
return logfile.delete();
}
//保存文件
public boolean savelogfile2internal(string logstring) {
try {
file dir = mcontext.getfilesdir();
if (!dir.exists()) {
dir.mkdirs();
}
file logfile = new file(dir, logcollectorutility.getmid(mcontext)
+ log_suffix);
fileoutputstream fos = new fileoutputstream(logfile , true);
fos.write(logstring.getbytes(charset));
fos.close();
} catch (exception e) {
e.printstacktrace();
loghelper.e(tag, "savelogfile2internal failed!");
return false;
}
return true;
}
public boolean savelogfile2sdcard(string logstring, boolean isappend) {
if (!logcollectorutility.issdcardexsit()) {
loghelper.e(tag, "sdcard not exist");
return false;
}
try {
file logdir = getexternallogdir();
if (!logdir.exists()) {
logdir.mkdirs();
}
file logfile = new file(logdir, logcollectorutility.getmid(mcontext)
+ log_suffix);
/*if (!isappend) {
if (logfile.exists() && !logfile.isfile())
logfile.delete();
}*/
loghelper.d(tag, logfile.getpath());
fileoutputstream fos = new fileoutputstream(logfile , isappend);
fos.write(logstring.getbytes(charset));
fos.close();
} catch (exception e) {
e.printstacktrace();
log.e(tag, "savelogfile2sdcard failed!");
return false;
}
return true;
}
private file getexternallogdir() {
file logdir = logcollectorutility.getexternaldir(mcontext, "log");
loghelper.d(tag, logdir.getpath());
return logdir;
}
}
uncaughtexceptionhandler实现类：crashhandler.java
当出现异常时，会进入public void uncaughtexception(thread thread, throwable ex) 方法中。
/**
*
* 如果需要捕获系统的未捕获异常（如系统抛出了未知错误，这种异常没有捕获，这将导致系统莫名奇妙的关闭，使得用户体验差），
* 可以通过uncaughtexceptionhandler来处理这种异常。
*
* @author 吴晓畅
*
*/
public class crashhandler implements uncaughtexceptionhandler {
private static final string tag = crashhandler.class.getname();
private static final string charset = "utf-8";
private static crashhandler sinstance;
private context mcontext;
private thread.uncaughtexceptionhandler mdefaultcrashhandler;
string appvername;
string appvercode;
string osver;
string vendor;
string model;
string mid;
//初始化该类
private crashhandler(context c) {
mcontext = c.getapplicationcontext();
// mcontext = c;
appvername = "appvername:" + logcollectorutility.getvername(mcontext);
appvercode = "appvercode:" + logcollectorutility.getvercode(mcontext);
osver = "osver:" + build.version.release;
vendor = "vendor:" + build.manufacturer;
model = "model:" + build.model;
mid = "mid:" + logcollectorutility.getmid(mcontext);
}
//初始化该类
public static crashhandler getinstance(context c) {
if (c == null) {
loghelper.e(tag, "context is null");
return null;
}
if (sinstance == null) {
sinstance = new crashhandler(c);
}
return sinstance;
}
public void init() {
if (mcontext == null) {
return;
}
boolean b = logcollectorutility.haspermission(mcontext);
if (!b) {
return;
}
mdefaultcrashhandler = thread.getdefaultuncaughtexceptionhandler();
thread.setdefaultuncaughtexceptionhandler(this);
}
/**
* 发生异常时候进来这里
*/
@override
public void uncaughtexception(thread thread, throwable ex) {
//
handleexception(ex);
//
ex.printstacktrace();
if (mdefaultcrashhandler != null) {
mdefaultcrashhandler.uncaughtexception(thread, ex);
} else {
process.killprocess(process.mypid());
// system.exit(1);
}
}
//将异常信息保存成文件
private void handleexception(throwable ex) {
string s = fomatcrashinfo(ex);
// string bes = fomatcrashinfoencode(ex);
loghelper.d(tag, s);
// loghelper.d(tag, bes);
//logfilestorage.getinstance(mcontext).savelogfile2internal(bes);
logfilestorage.getinstance(mcontext).savelogfile2internal(s);
if(constants.debug){
logfilestorage.getinstance(mcontext).savelogfile2sdcard(s, true);
}
}
private string fomatcrashinfo(throwable ex) {
/*
* string lineseparator = system.getproperty("line.separator");
* if(textutils.isempty(lineseparator)){ lineseparator = "\n"; }
*/
string lineseparator = "\r\n";
stringbuilder sb = new stringbuilder();
string logtime = "logtime:" + logcollectorutility.getcurrenttime();
string exception = "exception:" + ex.tostring();
writer info = new stringwriter();
printwriter printwriter = new printwriter(info);
ex.printstacktrace(printwriter);
string dump = info.tostring();
string crashmd5 = "crashmd5:"
+ logcollectorutility.getmd5str(dump);
string crashdump = "crashdump:" + "{" + dump + "}";
printwriter.close();
sb.append("&start---").append(lineseparator);
sb.append(logtime).append(lineseparator);
sb.append(appvername).append(lineseparator);
sb.append(appvercode).append(lineseparator);
sb.append(osver).append(lineseparator);
sb.append(vendor).append(lineseparator);
sb.append(model).append(lineseparator);
sb.append(mid).append(lineseparator);
sb.append(exception).append(lineseparator);
sb.append(crashmd5).append(lineseparator);
sb.append(crashdump).append(lineseparator);
sb.append("&end---").append(lineseparator).append(lineseparator)
.append(lineseparator);
return sb.tostring();
}
private string fomatcrashinfoencode(throwable ex) {
/*
* string lineseparator = system.getproperty("line.separator");
* if(textutils.isempty(lineseparator)){ lineseparator = "\n"; }
*/
string lineseparator = "\r\n";
stringbuilder sb = new stringbuilder();
string logtime = "logtime:" + logcollectorutility.getcurrenttime();
string exception = "exception:" + ex.tostring();
writer info = new stringwriter();
printwriter printwriter = new printwriter(info);
ex.printstacktrace(printwriter);
string dump = info.tostring();
string crashmd5 = "crashmd5:"
+ logcollectorutility.getmd5str(dump);
try {
dump = urlencoder.encode(dump, charset);
} catch (unsupportedencodingexception e) {
// todo auto-generated catch block
e.printstacktrace();
}
string crashdump = "crashdump:" + "{" + dump + "}";
printwriter.close();
sb.append("&start---").append(lineseparator);
sb.append(logtime).append(lineseparator);
sb.append(appvername).append(lineseparator);
sb.append(appvercode).append(lineseparator);
sb.append(osver).append(lineseparator);
sb.append(vendor).append(lineseparator);
sb.append(model).append(lineseparator);
sb.append(mid).append(lineseparator);
sb.append(exception).append(lineseparator);
sb.append(crashmd5).append(lineseparator);
sb.append(crashdump).append(lineseparator);
sb.append("&end---").append(lineseparator).append(lineseparator)
.append(lineseparator);
string bes = base64.encodetostring(sb.tostring().getbytes(),
base64.no_wrap);
return bes;
}
}
项目调用封装类：logcollector.java
/**
*
* 执行文件上传相关的类
*
*
* @author 吴晓畅
*
*/
public class logcollector {
private static final string tag = logcollector.class.getname();
private static string upload_url;
private static context mcontext;
private static boolean isinit = false;
private static httpparameters mparams;
//初始化文件上传的url，数据等内容
public static void init(context c , string upload_url , httpparameters params){
if(c == null){
return;
}
if(isinit){
return;
}
upload_url = upload_url;
mcontext = c;
mparams = params;
//初始化自己定义的异常处理
crashhandler crashhandler = crashhandler.getinstance(c);
crashhandler.init();
isinit = true;
}
/**
* 执行文件上传的网路请求
*
* if(iswifionly && !iswifimode){
return;
}表示只在wifi状态下执行文件上传
*
* @param iswifionly
*/
public static void upload(boolean iswifionly){
if(mcontext == null || upload_url == null){
log.d(tag, "please check if init() or not");
return;
}
if(!logcollectorutility.isnetworkconnected(mcontext)){
return;
}
boolean iswifimode = logcollectorutility.iswificonnected(mcontext);
if(iswifionly && !iswifimode){
return;
}
uploadlogmanager.getinstance(mcontext).uploadlogfile(upload_url, mparams);
}
/**
* 用于设置是否为测试状态
*
* @param isdebug true为是，false为否 如果是，能看到log日志，同时能够在将文件夹看到崩溃日志
*/
public static void setdebugmode(boolean isdebug){
constants.debug = isdebug;
loghelper.enabledefaultlog = isdebug;
}
}
3. 客户端接入使用
为通用项目设置is library模式
实际android项目使用
添加library
在application子类中进行初始化
public class myapplication extends application {
//后台地址地址
private static final string upload_url = "http://192.168.3.153:8080/bengkuitest/servlet/test";
@override
public void oncreate() {
super.oncreate();
boolean isdebug = true;
//设置是否为测试模式，如果是，同时能够在将文件夹看到崩溃日志
logcollector.setdebugmode(isdebug);
//params的数据可以为空 初始化logcollector的相关数据，用于文件上传到服务器
logcollector.init(getapplicationcontext(), upload_url, null);
}
}
编写异常并上传异常
public class mainactivity extends activity implements onclicklistener {
private button btn_crash;
private button btn_upload;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
btn_crash = (button) findviewbyid(r.id.button1);
btn_upload = (button) findviewbyid(r.id.button2);
btn_crash.setonclicklistener(this);
btn_upload.setonclicklistener(this);
}
//产生异常
private void causecrash(){
string s = null;
s.split("1");
}
//上传文件
private void uploadlogfile(){
//设置为只在wifi下上传文件
boolean iswifionly = true;//only wifi mode can upload
//执行文件上传服务器
logcollector.upload(iswifionly);//upload at the right time
}
@override
public void onclick(view v) {
switch (v.getid()) {
case r.id.button1:
causecrash();
break;
case r.id.button2:
//上传文件
uploadlogfile();
break;
default:
break;
}
}
}
运行结果如下图所示
--no1qr4tu7wx
content-disposition: form-data; name="logfile"; filename="c5c63fec3651fdebdd411582793fa40c.log"
content-type: application/octet-stream; charset=utf-8
&start---
logtime:2019-04-07 10:54:47
appvername:1.0
appvercode:1
osver:5.1.1
vendor:samsung
model:sm-g955f
mid:c5c63fec3651fdebdd411582793fa40c
exception:java.lang.nullpointerexception: attempt to invoke virtual method 'java.lang.string[] java.lang.string.split(java.lang.string)' on a null object reference
crashmd5:74861b8fb97ef57b82a87a826ab6b08f
crashdump:{java.lang.nullpointerexception: attempt to invoke virtual method 'java.lang.string[] java.lang.string.split(java.lang.string)' on a null object reference
at com.jiabin.logcollectorexample.mainactivity.causecrash(mainactivity.java:32)
at com.jiabin.logcollectorexample.mainactivity.onclick(mainactivity.java:45)
at android.view.view.performclick(view.java:4780)
at android.view.view$performclick.run(view.java:19866)
at android.os.handler.handlecallback(handler.java:739)
at android.os.handler.dispatchmessage(handler.java:95)
at android.os.looper.loop(looper.java:135)
at android.app.activitythread.main(activitythread.java:5293)
at java.lang.reflect.method.invoke(native method)
at java.lang.reflect.method.invoke(method.java:372)
at com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:903)
at com.android.internal.os.zygoteinit.main(zygoteinit.java:698)
}
&end---
--no1qr4tu7wx--
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