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For SpringMVC JSON interaction code is invalid, please the great god see if my JavaScript is write w
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Test the JSON interaction & lt;/title> <br/><The script type="text/javascript" SRC="https://bbs.csdn.net/topics/${pageContext. Request. ContextPath}/js/jquery. Min. Js" & gt; </script> <br/><The script type="text/javascript" & gt; <br/>The function testJson () {<br/>Var loginname=$(" # loginname "). Val (); <br/>Var password=$(" # "password," "). Val (); <br/>$. Ajax ({<br/>Url: "${pageContext. Request. ContextPath}/testJson", <br/>Type="post", <br/>Data: JSON. Stringify ({loginname: loginname, password: password}), <br/>ContentType: "application/json; Charset=utf-8, <br/>"DataType: "json", <br/>Success: the function (data) {<br/>If (data!=null) {<br/>Alert (" login "+ data. The loginname +" password "+ data. The password). <br/>} else {<br/>Alert (" fail "); } <br/>} <br/>}); <br/>} <br/></script> <br/></head> <br/><body> <br/><Form> <br/>Login name: & lt; Input type="text" name="loginname" id="loginname"/& gt; <Br/& gt; <br/>Password: & lt; Input type="password" name="password" id="password"/& gt; <Br/& gt; <br/><Input type="button" value="https://bbs.csdn.net/topics/test" onclick="testJson ()"/& gt; <br/></form> <br/></body> <br/></html> <br/><br/><br/>This is used for SpringMVC JSON interaction, input the login name and password, to process the return Controller class, but did not receive the Controller class, screening suspected to be a JavaScript error on the web for many times, but I have not learned really don't know where is wrong<p class="article - content rp"> CodePudding user response: </p>Settled, waste materials didn't write RequestMapping, type=for above: finished </div>
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