In this paper, we mainly talk about the two common methods of transmitting parameters between view and controller in SPRINGMVC:
1. JQuery
2. JSON
First, the way of jquery
Idea: When you click a button, the jquery event is triggered, and the entire form is submitted
In JSP
<script type= "Text/javascript" >function AddUser () {var form=document.form[0];form.action= "/springMVC/user/ Data/adduser "; form.method=" get "; Form.submit ();} </script><body>Controller in
the parameters in the JSP and controller are consistent
@Controller @requestmapping ("/user/data") public class Datacontroller {//one: Get Parameters directly @requestmapping ("/adduser") public String AddUser (String username,string age,httpservletrequest request) {Request.setattribute ("username", username); Request.setattribute ("Age", age); return "/usermanager";} Another: Gets the parameter @requestmapping ("/adduser") public String addUser (user user,httpservletrequest request) through the user entity { Request.setattribute ("username", user.getusername); Request.setattribute ("Age", user.getage); return "/usermanager" ;}}How to solve the Java WB Chinese garbled?
1, the JSP defines the page encoding method: UTF-8
<%@ page language= "java" pageencoding= "UTF-8"%>2. Set the server (Tomcat here) uriencoding= "UTF-8"
... \tomcat\apache-tomcat-6.0.35\conf\server.xml
<connector uriencoding= "UTF-8" port= "8080" protocol= "http/1.1" connectiontimeout= " 20000" redirectport= "8443"/>This can only solve the get commit garbled problem, but not solve the post submission! Mainly because of the different way of transmitting parameters
To troubleshoot post garbled issues, see the following scenarios:
3. Filter with filter in spring configuration file
Set Forceencoding to force encoding true at initialization time
Url-pattern: Set *.jsp to filter all JSP pages, set to */To filter all requests
<filter> <filter-name>encodingFilter</filter-name> <filter-class> org.springframework.web.filter.characterencodingfilter</filter-class> <init-param> < param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param > <init-param> <param-name>forceEncoding</param-name> <param-value>true </param-value> </init-param> </filter> <filter-mapping> < Filter-name>encodingfilter</filter-name> <url-pattern>/*.jsp</url-pattern>
Two, JSON modeIdea: Get the value from the control's ID and then convert it to JSON format for delivery
Problems here: Post submission normal, get commit garbled
Solution: First jquery will get the value of encodeURI respectively encoded, after the controller in the removal of the time with Urldecoder.decode respectively to decode.
In JSP
coded separately using the encodeURI
<script type= "Text/javascript" >$ (document). Ready (function () {$ ("Add"). Click (function () {var username= encodeURI ($ ("#username"). attr ("value"), Var Age=encodeuri ($ ("#age"). attr ("value"), Var user={username:username, Age:age};$.ajax ({url: "/springmvc/user/data/adduser", type: "Get", data:user,success:function (data) {alert (" Username-> "+data.username+" age-> "+data.age);})})}) </script><body>Controller in
decode with Urldecoder.decode (String)
<p> @Controller @requestmapping ("/user/data") public class Datacontroller {</p><p> // Get Parameters </p><p> @RequestMapping ("/adduserjson") public void AddUser (user user) through the user entity, HttpServletRequest request,httpservletresponse response) { </p><p>//decodes the parameter </p><p >string Username=urldecoder.decode (User.getusername, "UTF-8"); string Age=urldecoder.decode ( User.getage, "UTF-8"); //stitching the acquired parameters into JSON format, and then passing to the foreground display //{"UserName": "UserName", " Age ":" Age "} string result=" {\ "username\": \ " "+user.getusername () +" \ ", \" age\ ":" +user.getage () + "\"} "; printwriter out=null; Response.setcontenttype ("Application/json") try { out=response.getwriter (); out.write (result); } catch ( IOException e) { e.printstacktrace (); }</p><p> }}</p>
Summarize:
Springmvc The way the parameters are passed between the page and the controller, this article only describes the two most commonly used methods (Jquery+json), focusing on: JAVA Web Chinese garbled problem.
The first thing to do is to set the encoding method in the JSP to UTF-8
In jquery mode, if the Get commit method garbled, you can change the server encoding mode, if the post is garbled, can be configured filter filtering
JSON mode, the general use of post-submission method, Normal, if it is submitted by get, it is important to encode and decode the passed parameters separately.
SPRINGMVC Series (iii) jquery and JSON mode parameter passing and handling javaweb Chinese garbled problem
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