為什么要用myeclipse自帶的json包及json插件呢？一句話，方便，不用找struts2相匹配的json插件，這是優(yōu)點(diǎn)，缺點(diǎn)是json新開發(fā)的功能沒有。不過json原有的功能已經(jīng)夠使用了。1、 新建webproject2、添加struts2框架(addstruts2capabilities)3、 選擇請(qǐng)求方式，/.*4、 查看項(xiàng)目文件夾下Struts2CoreLibraries文件夾下是否有json的jar包及json插件0-BiStruts2CoreLibr：±t_ies國(guó)…些:dTLtlr-2.7.2.j-E：IfhangyQ：IMaop：illi:±tli：e_l.0.j:±t--E:\zh：=L?-(ms：classworlds_1.1.j：±i--E:(+)■■匝：cummurLE_beanntils_l.7.0.j：±t-0-匝a(bǔ)ummorLE-chaiil_1.2.j:±r-E:'i￡i .七[￡)■■函cummorLS-cullertiuns-S.2.j：±i-i .七y畫cummorLE-digester_￡.0.jar-E(±)-些aummorLE-tileupluad-1.2.1.j：±r?-IMi：ummorLE-iu_l.3.2.j:ai--E：Izh0-fma：commurL5_l：±rLgr2.3.j：di--E:'i.zh(+)■■[*：cummorLE-!ugging-1.0.4.j:±t-一：0-匝a(bǔ)ummorLE-!ugging-api_1.1.j:±t-￡)■■函cummurLS_v：±lidator-1.3.1.j：±i-國(guó).?濕：￡reem：di-kei—2.3.15.j^r-E:'iz.莊)..匝jEi：irL_lib_2.1.j：±r-ElhhaiLgy由…函ugnl_2.7.3.j：±i--E：仕haiLgyun0-fma：oro_2.0.8.jsr-E：'rhangyimg1莊).?些Ezlext-!.2_LLj:±r-ElhhaiLgy+IMetrute2_embeddedjEp_plugiil_2￡)■■函struts2-curiventiurL_plugin_2.@-laiti：etruts￡_jeun-plugin_.(+)■I'fiiiffi：EtrutE2-i：i：ire_.i：±r-E..**—+gxwork-core-2.1.6.jar-E:\zh5、 創(chuàng)建action、dao、實(shí)體類(User)，json使用實(shí)例action類代碼packagewoye.action;importjava.util.List;importjavax.servlet.http.HttpSession;importorg.apache.struts2.ServletActionContext;importwoye.dao.bean.User;importwoye.dao.impl.UserDaoImpl;importwoye.exceptions.DaoException;importwoye.exceptions.ParameterException;importwoye.exceptions.ValidateException;importwoye.util.MD5;importcom.opensymphony.xwork2.ActionSupport;publicclassUserActionextendsActionSupport{/****///privatestaticfinallongserialVersionUID=1L;privateUserDaoImpluserDao=newUserDaoImpl();publicUseruser;publicUsergetUser(){returnuser;}publicvoidsetUser(Useruser){this.user=user;}//登錄publicStringlogin()throwsDaoException,ValidateException,Exception{if(user==null||user.equals("")){returnERROR;}if(user.getNickName()==null||usergetNickName().equals("")){returnERROR;}if(user.getPassWord()==null||usergetPassWord().equals("")){returnERROR;}user=userDao.userLogon(usergetNickName(),user.getPassWord());System.out.println(usertoString());if(user!=null&&!user.equals("")){returnSUCCESS;}returnERROR;}}dao類代碼packagewoye.dao.impl;importjava.util.List;importwoye.dao.IUser;importwoye.dao.base.BaseDAOImpl;importwoye.dao.bean.User;importwoye.exceptions.DaoException;importwoye.exceptions.ParameterException;importwoye.exceptions.ValidateException;importwoye.util.MD5;publicclassUserDaoImplextendsBaseDAOImpl{//登錄publicUseruserLogon(StringuserName,StringuserPwd)throwsDaoException,ValidateException,Exception{StringBufferstrSql=newStringBuffer();strSql.append("SELECTUSERIDASuserId,NICKNAMEASnickName,PASSWORDASPassWord,TELEPHONEAStelephone,STATUSASstatus,logtimeaslogtime");strSql.append("FROMtd_user");strSql.append("wherenickName='"+userName+"'");strSql.append("andpassWord='"+userPwd+"'");System.out.println("=="+strSql);return(User)getObject(strSql,Userclass);}}注：BaseDAOImpl是一個(gè)父類dao,完成了基本的增刪改查的功能，另外此實(shí)例的JDBC使用了DBUtils框架,也就是BaseDAOImpl中各個(gè)功能都是由DBUtils完成的實(shí)體類（user）packagewoye.dao.bean;publicclassUser{//用戶編號(hào)privateStringuserId;//昵稱privateStringnickName;//密碼privateStringpassWord;//手機(jī)號(hào)privateStringtelephone;//發(fā)布時(shí)間privateStringlogtime;//狀態(tài)privateStringstatus;publicStringgetUserId(){returnuserId;}publicvoidsetUserId(StringuserId){this.userId=userId;}publicStringgetPassWord(){returnpassWord;}publicvoidsetPassWord(StringpassWord){this.passWord=passWord;}publicStringgetNickName(){returnnickName;}publicvoidsetNickName(StringnickName){this.nickName=nickName;}publicStringgetTelephone(){returntelephone;}publicvoidsetTelephone(Stringtelephone){this.telephone=telephone;}publicStringgetLogtime(){returnlogtime;}publicvoidsetLogtime(Stringlogtime){this.logtime=logtime;}publicStringgetStatus(){returnstatus;}publicvoidsetStatus(Stringstatus){this.status=status;}@OverridepublicStringtoString(){return"User[logtime="+logtime+",nickName="+nickName+",passWord="+passWord+",status="+status+",telephone="+telephone+",userId="+userId+"]";}publicUser(){super();}publicUser(StringpassWord,StringnickName,Stringtelephone,Stringlogtime,Stringstatus){super();this.nickName=nickName;this.passWord=passWord;this.telephone=telephone;this.logtime=logtime;this.status=status;}}注：user用的上的屬性就三個(gè)，id,name,password,其余的不要了，我懶了就沒刪，自己敲吧，要是復(fù)制就沒有學(xué)習(xí)的意義了，這都省了好多。6、struts.xml<?xmlversion="1.0"encoding="UTF-8"?><!DOCTYPEstrutsPUBLIC"-//ApacheSoftwareFoundation//DTDStrutsConfiguration2.0//EN""/dtds/struts-2.0.dtd"><struts><packagename="useraa"extends="json-default"namespace="/"><!--后臺(tái)begin--><actionname="userLogin"class="woye.action.UserAction"method="login"><resulttype="json"></result></action><!--end后臺(tái)--></package></struts>7、index.jsp<%@pagelanguage="java"import="java.util.*"pageEncoding="utf-8"%><%Stringpath=request.getContextPath();String basePath =request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN"><html><head><basehref="<%=basePath%>"><title>MyJSP'index.jsp'startingpage</title><metahttp-equiv="pragma"content="no-cache"><metahttp-equiv="cache-control"content="no-cache"><metahttp-equiv="expires"content="0"><metahttp-equiv="keywords"content="keyword1,keyword2,keyword3"><metahttp-equiv="description"content="Thisismypage"></head><script type="text/javascript"src="${page