Tianyi 28 -- simple use of struts2.1 and Ajax JSON

I. effect Preview Note: No style la s are made here, just simple implementation functions. 1) the username and password are empty:
2) incorrect user name and password:
3) enter the correct user name and password:

Ii. Code Demo: 1) project directory Demo:

2) Action Code (for convenience, the user name and password are fixed and are not accessed to the database, you can connect to the database for user name verification as needed ):

Package COM. test. action; import COM. opensymphony. xwork2.actionsupport; import COM. test. bean. ajaxbean; public class ajaxloginaction extends actionsupport {private string method; private string Info; private ajaxbean AB; Public String execute () {string url = "fail "; try {If ("login ". equals (this. getmethod () {url = This. login () ;}} catch (exception ERR) {err. printstacktrace ();} return URL;}/*** JSON login test * @ return Str Ing */private string login () {// system. out. println ("Name and pass11111 ==========================>>>>>>>" + AB. getUserName () + "" + AB. getPassword (); If (AB. getUserName () = NULL | AB. getUserName (). equals ("") | (AB. getPassword () = NULL | AB. getPassword (). equals ("") {This. setinfo ("the user name or password is blank. Enter the user name or password! ");} Else if (! AB. GetUserName (). Equals ("wzh") |! AB. GetPassword (). Equals ("123") {This. setinfo ("incorrect user name or password. Please enter the correct user name and password! ");} Else {This. setinfo (" Login successful! ");} Return" loginsuccess ";} Public String getmethod () {return method;} public void setmethod (string method) {This. method = method;} Public String getinfo () {return Info;} public void setinfo (string info) {this.info = Info;} public ajaxbean getab () {return AB ;} public void setab (ajaxbean AB) {This. AB = AB ;}}

3) entity class bean code (to facilitate the put of the username and password parameters in the original entity class, onlyUsername and password.):

Package COM. test. bean; import Java. io. serializable; public class ajaxbean implements serializable {private string ID; private string sfdm; private string sflbbh; private string ywmc; private string xz; private string rksj; private string gxsj; private string ZT; private string fplb_id; private string zdyflag; private string msfbz; private string bm; private string jmbz; private string sfbz; private string Username; Private string password; // assemble the SQL statement Public String getwhere () {// todo auto-generated method stubstringbuffer SQL = new stringbuffer ("where 1 = 1 "); if (sfdm! = NULL &&! "". Equals (sfdm. Trim () {SQL. append ("and sfdm = '" + sfdm + "'");} If (ywmc! = NULL &&! "". Equals (ywmc. trim () {SQL. append ("and ywmc like '%" + ywmc + "%'");} return SQL. tostring ();} Public String GetUserName () {return username;} public void setusername (string username) {This. username = username;} Public String GetPassword () {return password;} public void setpassword (string password) {This. password = password;} Public String GETID () {return ID;} public void setid (string ID) {This. id = ID;} Public String getsfdm () {return sfdm;} public void setsfdm (string sfdm) {This. sfdm = sfdm;} Public String getsflbbh () {return sflbbh;} public void setsflbbh (string sflbbh) {This. sflbbh = sflbbh;} Public String getywmc () {return ywmc;} public void setywmc (string ywmc) {This. ywmc = ywmc;} Public String getxz () {return xz;} public void setxz (string xz) {This. xz = xz;} Public String getrksj () {return rksj;} public void setrksj (string rksj) {This. rksj = rksj;} Public String getgxsj () {return gxsj;} public void setgxsj (string gxsj) {This. gxsj = gxsj;} Public String getzt () {return ZT;} public void setzt (string ZT) {This. zt = ZT;} Public String getfplb_id () {return fplb_id;} public void setfplb_id (string fplb_id) {This. fplb_id = fplb_id;} Public String getzdyflag () {return zdyflag;} public void setzdyflag (string zdyflag) {This. zdyflag = zdyflag;} Public String getmsfbz () {return msfbz;} public void setmsfbz (string msfbz) {This. msfbz = msfbz;} Public String getbm () {return bm;} public void setbm (string BM) {This. bm = bm;} Public String getjmbz () {return jmbz;} public void setjmbz (string jmbz) {This. jmbz = jmbz;} Public String getsfbz () {return sfbz;} public void setsfbz (string sfbz) {This. sfbz = sfbz ;}}

4) struts. xml configuration file (the imported configuration file is used here.Struts-system.xml, here only look at the following Ajax JSON configuration can be)

<? XML version = "1.0" encoding = "UTF-8"?> <! Doctype struts public "-// Apache Software Foundation // DTD struts configuration 2.1.7 // en" http://struts.apache.org/dtds/struts-2.1.7.dtd "> <struts> <package name =" ajaxtestwzh "namespace ="/"extends = "Global"> <action name = "ajaxtest" class = "ajaxaction"> <result name = "selectdatasuccess">/WEB-INF/JSP/ajaxtestlist. JSP </result> </Action> </package> <! -- Start with Ajax JSON Asynchronous interaction test configuration --> <package name = "default" namespace = "/" extends = "JSON-Default"> <! -- Pay attention to the package name configuration --> <action name = "loginjsontest" class = "loginjsonaction"> <! -- Return the result of a single value --> <result name = "loginsuccess" type = "JSON"> </result> </Action> </package> <! -- The configuration of Asynchronous interaction test with Ajax JSON is complete --> </struts>

5) applicationcontext. xml configuration file (just look at the configuration of the bottom Ajax JSON)

<? XML version = "1.0" encoding = "UTF-8"?> <Beansxmlns = "http://www.springframework.org/schema/beans" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns: P = "http://www.springframework.org/schema/p" xsi: schemalocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <! -- Data source configuration --> <bean id = "sfdatasource" class = "org. apache. commons. DBCP. basicdatasource "Destroy-method =" close "> <property name =" driverclassname "value =" oracle. JDBC. driver. oracledriver "> </property> <property name =" url "value =" JDBC: oracle: thin: @ 192.168.1.8: 1521: orcl "> </property> <property name =" username "value =" azc2012 "> </property> <property name =" password "value =" azc2012 "> </Property> <property name = "maxactive" V Alue = "300"> </property> <property name = "maxidle" value = "20"> </property> <property name = "maxwait" value = "1000"> </property> <property name = "removeabandoned" value = "true"> </property> <property name = "removeabandonedtimeout" value = "360"> </property> <Property name = "logabandoned" value = "true"> </property> <property name = "defaultautocommit" value = "true"> </property> </bean> <bean id = "ajaxjdbctemplate" class = "org. SPR Ingframework. JDBC. core. jdbctemplate "abstract =" false "lazy-init =" default "autowire =" default "> <property name =" datasource "> <ref local =" sfdatasource "/> </Property> </bean> <! -- Test configuration start --> <bean id = "ajaxaction" class = "com. test. action. ajaxtest "Scope =" prototype "> <property name =" asservice "ref =" asservice "> </property> </bean> <bean id =" asservice "class =" com. test. service. impl. ajaxserviceimpl "Scope =" prototype "> <property name =" addao "ref =" addao "> </property> </bean> <bean id =" addao "class =" com. test. dao. ajaxdao "Scope =" prototype "> <property name =" ajaxjdbctemplate "ref =" ajaxjdbctemp Late "> </property> <! -- If you use ajaxjdbctemplate, You need to generate its get and set methods at the DaO layer, and do not inherit the jdbcdaosupport class; if you directly use <property name = "datasource" ref = "datasource"> </property>, you do not need to declare at the DaO layer to directly inherit the jdbcdaosupport class and call the method for this class to access the database --> </bean> <! -- Test configuration ended --> <! -- Ajax JSON configuration start --> <bean id = "loginjsonaction" class = "com. Test. Action. ajaxloginaction" Scope = "prototype"> </bean> <! -- Ajax JSON configuration ends --> </beans>

6) login. jsp page (jquery. js and login. js (self-written JS) need to be introduced ))

<% @ Page Language = "Java" Import = "Java. util. * "pageencoding =" UTF-8 "%> <% @ taglib uri =" http://java.sun.com/jstl/core_rt "prefix =" C "%> <% @ taglib prefix =" S "uri ="/Struts- tags "%> <% string Path = request. getcontextpath (); string basepath = request. getscheme () + ": //" + request. getservername () + ":" + request. getserverport () + path + "/"; %> <HTML> 
7) login. js code:
Function login () {var username = $ ("# usernameid "). val (); var userpass = $ ("# passid "). val (); $. getjson ("loginjsontest. action? Method = login & AB. Username = "+ username +" & AB. Password = "+ userpass, function (data) {// $. getjson (" loginjsontest. Action? Method = login "," AB. username = "+ username +" & AB. password = "+ userpass, function (data) {// another form of passing parameters // pass. operators can be retrieved from data. get the value of info in action in message $ ("# message" ).html ("<font color = 'red'>" + data.info + "</font> ");});}