The experiment was done on the project of the previous article;
Data written to page background forward dataTestController add
The return value of the/** * method is Modelandview, new Modelandview ("index", map), and is equivalent to putting the result data in the request * @return * @ Throws Exception * /@RequestMapping ("/toperson4.do") public Modelandview ToPerson4 () throws exception{ Person person = new person (); Person.setname ("Jerome"); Person.setage (a); Person.setaddress ("Nanan"); SimpleDateFormat format = new SimpleDateFormat ("Yyyy-mm-dd"); Date date = Format.parse ("2012-12-21"); Person.setbirthday (date); map<string,object> map = new hashmap<string, object> (); Map.put ("P", person); return new Modelandview ("Jsp/index", map); }Page Received: index.jsp
<body>Introduction of FMT Tag Library in JSP
* The article contains the URL that is disabled and cannot be saved and published.
Too pit, this link is also blocked ~
Http://localhost:8080/springmvc-2/test/toPerson4.do
To restart Tomcat access:
The output information is correct;
Another way:/** * Define the map directly in the parameter list of the method, this map even if the map inside the Modelandview is handled uniformly by the view parser, the Unified Walk Modelandview interface * is not recommended to use * @ param map * @return * @throws Exception * /@RequestMapping ("/toperson5.do") public String ToPerson5 (map<string,object> Map) throws exception{person person = new person (); Person.setname ("Jerome"); Person.setage (a); Person.setaddress ("Nanan"); SimpleDateFormat format = new SimpleDateFormat ("Yyyy-mm-dd"); Date date = Format.parse ("2012-12-21"); Person.setbirthday (date); Map.put ("P", person); return "Jsp/index"; }To restart Tomcat access:
Http://localhost:8080/springmvc-2/test/toPerson5.do
The output is correct, the recommended way to use:/** * Define Model,model.addattribute directly in the parameter list ("P", person); * To put the parameter values in the request class, it is recommended to use * @param map * @return * @throws Exception * /@RequestMapping ("/ Toperson6.do ") Public String ToPerson6 (model model) throws Exception {person person = new person (); Person.setname ("Jerome"); Person.setage (a); Person.setaddress ("Nanan"); SimpleDateFormat format = new SimpleDateFormat ("Yyyy-mm-dd"); Date date = Format.parse ("2012-12-21"); Person.setbirthday (date); Put the parameter value into the request class to Model.addattribute ("P", person); return "Jsp/index"; }To restart Tomcat access:
Http://localhost:8080/springmvc-2/test/toPerson6.do
Output the correct data; no page jumps: Ajax backend methods:In TestController Plus
/** * Ajax request return value type should be void, parameter list directly define HttpServletResponse, * Get Prontwriter class, finally can write the results to the page * Not recommended to use * @ PARAM name * @param response * /@RequestMapping ("/ajax.do") public void Ajax (String name, HttpServletResponse response) { String result = "Hello" + name; try { response.getwriter (). Write (Result), } catch (IOException e) { e.printstacktrace ()} }Foreground call New ajax.jsp
<input id= "MyButton" type= "button" value= "click" >
Webroot New JS folder to copy jquery in;
Introduce jquery and write JS scripts:<script type= "Text/javascript" > $ (function () { $ ("#myButton"). Click (function () { $.ajax ({ URL: "test/ajax.do", type: "Post", dataType: "Text", data:{ name: "Zhangsan" }, success: function (responsetext) { alert (responsetext) ,}, error:function () { alert ("System error"); } }); }); }); </script>Write a forward background:
@RequestMapping ("/toajax.do") public String Toajax () { return "Jsp/ajax"; }Restart Tomcat Access
Http://localhost:8080/springmvc-2/test/toAjax.do
Click, pop-up Hello Zhangsan, success; The above method is not recommended, recommended use:/** * Define PRINTWRITER,OUT.WROTE (Result) directly on the list of parameters; * To write the results to the page, it is recommended to use * @param name * @param out * /@RequestMapping ("/ajax1.do") public void Ajax1 ( String name, PrintWriter out) { string result= "Hello1" +name; Out.write (result); }Modify the Ajax.jap page, JS script, jump URL is
URL: "Test/ajax1.do",
Restart Tomcat Access
Http://localhost:8080/springmvc-2/test/toAjax.do
Click
Pophello1 Zhangsan;form:Copy an index, named form.jsp
<body> <form action= "test/toperson7.do" method= "POST" > name:<input name= "name" type= "text" ><br/> age:<input name= "age" type= "text" ><br/> address:<input name= "Address" type= "Text" ><br/> birthday:<input name= "Birthday" type= "text" ><br/> <input type= " Submit "><br/> </form>TestController
@RequestMapping ("/toperson7.do") public String toPerson7 (person person) { System.out.println (person); return "Jsp/index"; }To restart Tomcat access:
Specify the request mode:
Http://localhost:8080/springmvc-2/test/toForm.do
Submit Jump to
Http://localhost:8080/springmvc-2/test/toPerson7.do
Console output
person [Name=aa, ADDRESS=ASDF, birthday=tue June 00:00:00 CST, age=22]Background can specify the method of submission, if the foreground is not used the same way of submission will be error;
/** * @RequestMapping (value= "/toperson7.do", Method=requestmethod.post) * Can specify the request method, the front desk must be in its established way to access, Otherwise there will be a 405 error * @param person * @return * /@RequestMapping (value= "/toperson7.do", method= requestmethod.post) Public String toPerson7 (person person) { System.out.println (person); return "Jsp/index"; }Form.jap method modified to get and post test; Redirect: Same controller
/** * Redirect: Controller internal Redirect, redirect: plus the value of requesmapping in the same controller * @return */ @ Requestmapping ("/redirecttoform.do") public String Redirecttoform () { return ' redirect:toForm.do '; }To restart Tomcat access:
Http://localhost:8080/springmvc-2/test/redirectToForm.do
Redirect to
Redirection between Http://localhost:8080/springmvc-2/test/toForm.do controllers:Copy a TestController to TestController1
Leave this.@Controller//is used to annotate the @requestmapping ("/test1")//controller unique identity of the control layer of the current class is SPRINGMVC, or the namespace public class TestController1 { @RequestMapping ("/toform.do") public String Toform () { return "Jsp/form"; }}TestController add
/** * Controller redirection: You must specify the namespace of the controller and then * Specify the value of requestmapping, redirect: Must be added/, starting from the root directory, * Otherwise, from the day of test found * @return * /@RequestMapping ("/redirecttoform1.do") public String RedirectToForm1 () { return "redirect:/test1/toform.do"; }Restart Tomcat Access
SPRINGMVC return value, data write to page, form submission, Ajax, redirect
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