在Web下创建statics包，在statics包下创建js包，导入jQuery.js
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--自动扫描指定包-->
<context:component-scan base-package="com.aurora.controller"/>
<!--静态资源过滤-->
<mvc:default-servlet-handler/>
<!--注解驱动-->
<mvc:annotation-driven/>
<!--视图解析器：DispatcherServlet给他的ModelAndView-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="internalResourceViewResolver">
<!--前缀-->
<property name="prefix" value="/WEB-INF/jsp/"/>
<!--后缀-->
<property name="suffix" value=".jsp"/>
</bean>
</beans>
public class AjaxController {
/**
@RequestMapping("/t1")
public String test() {
return "hello";
}
@RequestMapping("/a1")
public void a1(String name, HttpServletResponse httpServletResponse) {
System.out.println(name);
if ("baidu".equals(name)) {
System.out.println("true");
} else {
System.out.println("false");
}
}
@RequestMapping("/a2")
public List<User> a2() {
List<User> userList = new ArrayList<User>();
userList.add(new User("java", 1, "male"));
userList.add(new User("css", 2, "male"));
userList.add(new User("js", 3, "female"));
return userList;
}
**/
@RequestMapping("/a3")
public String a3(String name, String pwd) {
String msg = "";
if (name != null) {
if ("admin".equals(name)) {
msg = "ok";
} else {
msg = "error";
}
}
if (pwd != null) {
if ("123456".equals(pwd)) {
msg = "ok";
} else {
msg = "error";
}
}
return msg;
}
}
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
<script src="${pageContext.request.contextPath}/statics/js/jquery-3.6.0.js"></script>
<script>
function a1() {
$.post({
url: "${pageContext.request.contextPath}/a3",
data: {"name": $("#name").val()},
success: function (data) {
if (data.toString() === ‘ok‘) {
$("#userInfo").css("color", "green");
}
$("#userInfo").html(data);
}
})
}
function a2() {
$.post({
url: "${pageContext.request.contextPath}/a3",
data: {"pwd": $("#pwd").val()},
success: function (data) {
if (data.toString() === ‘ok‘) {
$("#pwdInfo").css("color", "green");
}
$("#pwdInfo").html(data);
}
})
}
</script>
</head>
<body>
<p>
用户名：<input type="text" id="name" onblur="a1()">
<span id="userInfo"></span>
</p>
<p>
密码：<input type="text" id="pwd" onblur="a2()">
<span id="pwdInfo"></span>
</p>
</body>
</html>
原文：https://www.cnblogs.com/rongchengbanxia/p/14919880.html