查看Json输出的*最方便*的方法 (转)
查看Json输出的*最方便*的方法 (转)
发布时间:2016-12-29 来源:查字典编辑
摘要:不用耗费额外的精力随时查看Json输出“不用耗费额外的精力”指的是:当需要查看Json输出时,只要转转眼球(可能至少还需要点两下鼠标,恐怕)...

不用耗费额外的精力随时查看Json输出

“不用耗费额外的精力”指的是:当需要查看Json输出时,只要转转眼球(可能至少还需要点两下鼠标,恐怕)就能很快找到想看的结果。

查看Json输出的方法很多,我们所能找的最接近这个目标的方案是“Fiddler2+JsonViewer插件+自定义Fiddler2过滤条件”。想要查看Json输出时,只要先将Fiddler运行起来,然后在浏览器里正常操作Web页面,就可以在Fiddler里面看到截获的Json输出了,效果如下图所示。

查看Json输出的*最方便*的方法 (转)1

安装Fiddler2+JsonViewer插件

Fiddler2是一款老牌Web调试工具。下载、安装之后,通过点击“开始|程序|Fiddler2”或点击IE的菜单“工具|Fiddler2”将其运行起来后,它会自动把自己注册成IE的代理服务器,从而截获任何经过IE的请求/应答;当关闭它时,它又会自动把代理服务器配置取消(当年使用Fiddler1的时候,还得自己添加代理服务器配置,很麻烦的说)。

JsonViewer是一款查看Json对象的小工具。解压后,可以看到3个子目录:

- JsonView:可独立运行版。

- Visualizer:VS2005插件。

- Fiddler:Fiddler2插件。

我们接下来要安装JsonViewer的Fiddler2插件。方法是,将Fiddler目录中的所有文件复制到“Fiddler2的安装目录Inspectors”。然后修改“Fiddler2的安装目录fiddler.exe.config”,如下图所示,粗体部分是需要我们添加的配置信息。

复制代码 代码如下:

<configuration>

<runtime>

<generatePublisherEvidence enabled="false"/>

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">

<probing privatePath="Inspectors" />

</assemblyBinding>

</runtime>

</configuration>

注意 IE7 和 .NET Framework 被硬编码成只要是对localhost的请求,就不通过代理服务器。所以像“http://localhost:8000/Default.aspx”这样的请求不会被Fiddler2截获。解决方法是:1) 将“localhost”替换成“localhost.”,如“http://localhost.:8000/Default.aspx”;2) 将“localhost”替换成本机IP地址,如“http://172.16.75.78:8000/Default.aspx”。

现在,让我们把Fiddler2运行起来,再操作一下页面,就可以在Fiddler2窗体左侧的“Web Sessions”列表里看到一大堆请求/应答。点击返回Json的那一条,再点击进入右侧的“Inspectors”、“Json”Tab页,就可以了。只是,Fiddler2默认会把所有经过IE的任何请求/应答全都显示出来,这样一来,“Web Sessions”列表里的东东就嫌太多了,能不能把与Json不相干的东东全部过滤掉呢?这个并不难,只要在Fiddler2的“CustomRules”里面增加几行代码就可以了。

自定义过滤条件

点击Fiddler2的菜单“Rules|Customize Rules...”,会自动由记事本打开可添加自定义规则的代码文件。

在第81行增加如下代码,目的是在Fiddler2的Rules菜单里增加一个“只显示Json”的菜单项:

// jcl20091121

public static RulesOption("只显示 &Json")

var m_ShowJsonOnly: boolean = false;

在OnBeforeResponse事件里增加如下代码,意思是如果“Rules|只显示Json”菜单项被选中了,就过滤掉所有Content-Type!="application/json; charset=utf-8"的应答。

复制代码 代码如下:

// jcl:2009-11-21

if(m_ShowJsonOnly) {

//MessageBox.Show(oSession.oResponse.headers.Item("Content-Type").ToString());

if (!oSession.oResponse.headers.ExistsAndContains("Content-Type", "application/json; charset=utf-8")) {

oSession["ui-hide"] = "hide"; // String value not important

}

}

所有源码在此:

自定义规则

复制代码 代码如下:

import System;

import System.Windows.Forms;

import Fiddler;

// GLOBALIZATION NOTE:

// Be sure to save this file with UTF-8 Encoding if using any non-ASCII characters

// in strings, etc.

//

// JScript Reference

// http://www.fiddler2.com/redir/?id=msdnjsnet

//

// FiddlerScript Reference

// http://www.fiddler2.com/redir/?id=fiddlerscriptcookbook

//

// FiddlerScript Editor:

// http://www.fiddler2.com/redir/?id=fiddlerscripteditor

class Handlers

{

// The following snippet demonstrates a custom-bound column for the web sessions list.

// See http://www.fiddler2.com/fiddler/help/configurecolumns.asp for more info

//public static BindUIColumn("Method", 60)

//function FillMethodColumn(oS: Session){

// if ((oS.oRequest != null) && (oS.oRequest.headers != null))

// return oS.oRequest.headers.HTTPMethod; else return String.Empty;

//}

public static RulesOption("Hide 304s")

var m_Hide304s: boolean = false;

// Cause Fiddler to override the Accept-Language header with one of the defined values

public static RulesOption("Request &Japanese Content")

var m_Japanese: boolean = false;

// Cause Fiddler to override the User-Agent header with one of the defined values

RulesString("&User-Agents", true)

RulesStringValue(0,"Netscape &3", "Mozilla/3.0 (Win95; I)")

RulesStringValue(1,"&IEMobile", "Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 6.12)")

RulesStringValue(2,"&Safari (XP)", "Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9.1")

RulesStringValue(3,"IE &6 (XPSP2)", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)")

RulesStringValue(4,"IE &7 (Vista)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1)")

RulesStringValue(5,"IE &8 (Win2k3 x64)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; WOW64; Trident/4.0)")

RulesStringValue(6,"IE 8 (Win7)", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0)")

RulesStringValue(7,"IE 8 (IE7 CompatMode)", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0)")

RulesStringValue(8,"&Opera 10", "Opera/9.80 (Windows NT 5.2; U; en) Presto/2.2.15 Version/10.00")

RulesStringValue(9,"&Firefox 2", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.10) Gecko/20071115 Firefox/2.0.0.10")

RulesStringValue(10,"&Firefox 3.5", "Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3")

RulesStringValue(10,"&Firefox (Mac)", "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.3) Gecko/20090824 Firefox/3.5.3")

RulesStringValue(12,"Chrome", "Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.195.24 Safari/532.0")

RulesStringValue(13,"&Custom", "%CUSTOM%")

public static var sUA: String = null;

// Cause Fiddler to delay HTTP traffic to simulate typical 56k modem conditions

public static RulesOption("Simulate &Modem speeds", "Per&formance")

var m_SimulateModem: boolean = false;

// Removes HTTP-caching related headers and specifies "no-cache" on requests and responses

public static RulesOption("&Disable Caching", "Per&formance")

var m_DisableCaching: boolean = false;

// Show the duration between the start of Request.Send and Response.Completed in Milliseconds

public static RulesOption("&Show Time-to-Last-Byte", "Per&formance")

var m_ShowTTLB: boolean = false;

// Show the time of response completion

public static RulesOption("Show Response &Timestamp", "Per&formance")

var m_ShowTimestamp: boolean = false;

// Create a new option on the Rules menu. Set the default value for the option.

public static RulesOption("&UNTITLED")

var m_bUNTITLED: boolean = false;

// Create a new item on the Tools menu.

public static ToolsAction("&UNTITLED")

function DoUNTITLED(oSessions: Fiddler.Session[]){

// Write your code here

}

// jcl20091121

public static RulesOption("只显示 &Json")

var m_ShowJsonOnly: boolean = false;

// Force a manual reload of the script file. Resets all

// RulesOption variables to their defaults.

public static ToolsAction("Reset Script")

function DoManualReload(){

FiddlerObject.ReloadScript();

}

public static ContextAction("Decode Selected Sessions")

function DoRemoveEncoding(oSessions: Session[]){

for (var x = 0; x < oSessions.Length; x++){

oSessions[x].utilDecodeRequest();

oSessions[x].utilDecodeResponse();

}

}

static function OnBoot(){

// MessageBox.Show("Fiddler has finished booting");

// System.Diagnostics.Process.Start("iexplore.exe");

// FiddlerObject.UI.ActivateRequestInspector("HEADERS");

// FiddlerObject.UI.ActivateResponseInspector("HEADERS");

}

static function OnShutdown(){

// MessageBox.Show("Fiddler has shutdown");

}

static function OnAttach(){

// MessageBox.Show("Fiddler is now the system proxy");

// System.Diagnostics.Process.Start("proxycfg.exe", "-u"); // Notify WinHTTP of proxy change

}

static function OnDetach(){

// MessageBox.Show("Fiddler is no longer the system proxy");

// System.Diagnostics.Process.Start("proxycfg.exe", "-u"); // Notify WinHTTP of proxy change

}

static function OnBeforeRequest(oSession: Session)

{

// Sample Rule: Color ASPX requests in RED

// if (oSession.uriContains(".aspx")) { oSession["ui-color"] = "red"; }

// Sample Rule: Flag POSTs to fiddler2.com in italics

// if (oSession.HostnameIs("www.fiddler2.com") && oSession.HTTPMethodIs("POST")) { oSession["ui-italic"] = "yup"; }

// Sample Rule: Break requests for URLs containing "/sandbox/"

// if (oSession.uriContains("/sandbox/")){

// oSession.oFlags["x-breakrequest"] = "yup"; // Existence of the x-breakrequest flag creates a breakpoint; the "yup" value is unimportant.

// }

if ((null != gs_ReplaceToken) && (oSession.url.indexOf(gs_ReplaceToken)>-1)){ // Case sensitive

oSession.url = oSession.url.Replace(gs_ReplaceToken, gs_ReplaceTokenWith);

}

if ((null != gs_OverridenHost) && (oSession.host.toLowerCase() == gs_OverridenHost)){

oSession["x-overridehost"] = gs_OverrideHostWith;

}

if ((null!=bpRequestURI) && oSession.uriContains(bpRequestURI)){

oSession["x-breakrequest"]="uri";

}

if ((null!=bpMethod) && (oSession.HTTPMethodIs(bpMethod))){

oSession["x-breakrequest"]="method";

}

if ((null!=uiBoldURI) && oSession.uriContains(uiBoldURI)){

oSession["ui-bold"]="QuickExec";

}

if (m_SimulateModem){

// Delay sends by 300ms per KB uploaded.

oSession["request-trickle-delay"] = "300";

}

if (m_DisableCaching){

oSession.oRequest.headers.Remove("If-None-Match");

oSession.oRequest.headers.Remove("If-Modified-Since");

oSession.oRequest["Pragma"] = "no-cache";

}

// User-Agent Overrides

if (null != sUA){

oSession.oRequest["User-Agent"] = sUA;

}

if (m_Japanese){

oSession.oRequest["Accept-Language"] = "ja";

}

}

static function OnBeforeResponse(oSession: Session)

{

if (m_SimulateModem){

// Delay receives by 150ms per KB downloaded.

oSession["response-trickle-delay"] = "150";

}

if (m_DisableCaching){

oSession.oResponse.headers.Remove("Expires");

oSession.oResponse["Cache-Control"] = "no-cache";

}

if (m_ShowTimestamp){

oSession["ui-customcolumn"] = DateTime.Now.ToString("H:mm:ss.ffff") + " " + oSession["ui-customcolumn"];

}

if (m_ShowTTLB){

oSession["ui-customcolumn"] = oSession.oResponse.iTTLB + "ms " + oSession["ui-customcolumn"];

}

if (m_Hide304s && oSession.responseCode == 304){

oSession["ui-hide"] = "true";

}

if ((bpStatus>0) && (oSession.responseCode == bpStatus)){

oSession["x-breakresponse"]="status";

}

if ((null!=bpResponseURI) && oSession.uriContains(bpResponseURI)){

oSession["x-breakresponse"]="uri";

}

// jcl:2009-11-21

if(m_ShowJsonOnly) {

//MessageBox.Show(oSession.oResponse.headers.Item("Content-Type").ToString());

if (!oSession.oResponse.headers.ExistsAndContains("Content-Type", "application/json; charset=utf-8")) {

oSession["ui-hide"] = "hide"; // String value not important

}

}

// Uncomment to reduce incidence of "unexpected socket closure" exceptions in .NET code.

// Note that you really should also fix your .NET code to gracefully handle unexpected connection closure.

//

// if (!(((oSession.responseCode == 401) && oSession.oResponse["WWW-Authenticate"].Length > 9) ||

// ((oSession.responseCode == 407) && oSession.oResponse["Proxy-Authenticate"].Length > 9))) {

// oSession.oResponse["Connection"] = "close";

// }

}

static function Main()

{

var today: Date = new Date();

FiddlerObject.StatusText = " CustomRules.js was loaded at: " + today;

// Uncomment to add a "Server" column containing the response "Server" header, if present

// FiddlerObject.UI.lvSessions.AddBoundColumn("Server", 50, "@response.server");

}

// These static variables are used for simple breakpointing & other QuickExec rules

static var bpRequestURI:String = null;

static var bpResponseURI:String = null;

static var bpStatus:int = -1;

static var bpMethod: String = null;

static var uiBoldURI: String = null;

static var gs_ReplaceToken: String = null;

static var gs_ReplaceTokenWith: String = null;

static var gs_OverridenHost: String = null;

static var gs_OverrideHostWith: String = null;

// The OnExecAction function is called by either the QuickExec box in the Fiddler window,

// or by the ExecAction.exe command line utility.

static function OnExecAction(sParams: String[]){

FiddlerObject.StatusText = "ExecAction: " + sParams[0];

var sAction = sParams[0].toLowerCase();

switch (sAction){

case "bold":

if (sParams.Length<2) {uiBoldURI=null; FiddlerObject.StatusText="Bolding cleared"; return;}

uiBoldURI = sParams[1]; FiddlerObject.StatusText="Bolding requests for " + uiBoldURI;

break;

case "bp":

FiddlerObject.alert("bpu = breakpoint request for urinbpm = breakpoint request methodnbps=breakpoint response statusnbpafter = breakpoint response for URI");

break;

case "bps":

if (sParams.Length<2) {bpStatus=-1; FiddlerObject.StatusText="Response Status breakpoint cleared"; return;}

bpStatus = parseInt(sParams[1]); FiddlerObject.StatusText="Response status breakpoint for " + sParams[1];

break;

case "bpv":

case "bpm":

if (sParams.Length<2) {bpMethod=null; FiddlerObject.StatusText="Request Method breakpoint cleared"; return;}

bpMethod = sParams[1].toUpperCase(); FiddlerObject.StatusText="Request Method breakpoint for " + bpMethod;

break;

case "bpu":

if (sParams.Length<2) {bpRequestURI=null; FiddlerObject.StatusText="RequestURI breakpoint cleared"; return;}

if (sParams[1].toLowerCase().StartsWith("http://")){sParams[1] = sParams[1].Substring(7);}

bpRequestURI = sParams[1];

FiddlerObject.StatusText="RequestURI breakpoint for "+sParams[1];

break;

case "bpafter":

if (sParams.Length<2) {bpResponseURI=null; FiddlerObject.StatusText="ResponseURI breakpoint cleared"; return;}

if (sParams[1].toLowerCase().StartsWith("http://")){sParams[1] = sParams[1].Substring(7);}

bpResponseURI = sParams[1];

FiddlerObject.StatusText="ResponseURI breakpoint for "+sParams[1];

break;

case "overridehost":

if (sParams.Length<3) {gs_OverridenHost=null; FiddlerObject.StatusText="Host Override cleared"; return;}

gs_OverridenHost = sParams[1].toLowerCase();

gs_OverrideHostWith = sParams[2];

FiddlerObject.StatusText="Connecting to [" + gs_OverrideHostWith + "] for requests to [" + gs_OverridenHost + "]";

break;

case "urlreplace":

if (sParams.Length<3) {gs_ReplaceToken=null; FiddlerObject.StatusText="URL Replacement cleared"; return;}

gs_ReplaceToken = sParams[1];

gs_ReplaceTokenWith = sParams[2].Replace(" ", "%20"); // Simple helper

FiddlerObject.StatusText="Replacing [" + gs_ReplaceToken + "] in URIs with [" + gs_ReplaceTokenWith + "]";

break;

case "select":

if (sParams.Length<2) { FiddlerObject.StatusText="Please specify Content-Type to select."; return;}

FiddlerObject.UI.actSelectSessionsWithResponseHeaderValue("Content-Type", sParams[1]);

MessageBox.Show(sParams[1]);

FiddlerObject.StatusText="Selected sessions returning Content-Type: " + sParams[1] + ".";

if (FiddlerObject.UI.lvSessions.SelectedItems.Count > 0){

FiddlerObject.UI.lvSessions.Focus();

}

break;

case "allbut":

case "keeponly":

if (sParams.Length<2) { FiddlerObject.StatusText="Please specify Content-Type to retain during wipe."; return;}

FiddlerObject.UI.actSelectSessionsWithResponseHeaderValue("Content-Type", sParams[1]);

MessageBox.Show(sParams[1]);

FiddlerObject.UI.actRemoveUnselectedSessions();

FiddlerObject.UI.lvSessions.SelectedItems.Clear();

FiddlerObject.StatusText="Removed all but Content-Type: " + sParams[1];

break;

case "stop":

FiddlerObject.UI.actDetachProxy();

break;

case "start":

FiddlerObject.UI.actAttachProxy();

break;

case "cls":

case "clear":

FiddlerObject.UI.actRemoveAllSessions();

break;

case "g":

case "go":

FiddlerObject.UI.actResumeAllSessions();

break;

case "help":

Utilities.LaunchHyperlink("http://www.fiddler2.com/redir/?id=quickexec");

break;

case "hide":

FiddlerObject.UI.actMinimizeToTray();

break;

case "nuke":

FiddlerObject.UI.actClearWinINETCache();

FiddlerObject.UI.actClearWinINETCookies();

break;

case "show":

FiddlerObject.UI.actRestoreWindow();

break;

case "tail":

if (sParams.Length<2) { FiddlerObject.StatusText="Please specify # of sessions to trim the session list to."; return;}

FiddlerObject.UI.TrimSessionList(int.Parse(sParams[1]));

break;

case "quit":

FiddlerObject.UI.actExit();

break;

case "dump":

FiddlerObject.UI.actSelectAll();

FiddlerObject.UI.actSaveSessionsToZip(CONFIG.GetPath("Captures") + "dump.saz");

FiddlerObject.UI.actRemoveAllSessions();

FiddlerObject.StatusText = "Dumped all sessions to " + CONFIG.GetPath("Captures") + "dump.saz";

break;

default:

if (sAction.StartsWith("http") || sAction.StartsWith("www")){

System.Diagnostics.Process.Start(sAction);

}

else

FiddlerObject.StatusText = "Requested ExecAction: " + sAction + " not found. Type HELP to learn more.";

}

}

}

现在“Web Sessions”列表已经清爽多了,可是,如果我们想忙里偷闲,去博客园首页逛逛,就会发现“Web Sessions”列表里面多了几条博客园首页的Json输出,这是因为Fiddler2默认会截获所有经由IE的请求/应答。能不能让它只显示本机的请求/应答呢?这个只需要配置一下Fiddler2的Filter选项就可以了,如下图所示。

查看Json输出的*最方便*的方法 (转)2

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