老师 为什么我写的代码没有拦截js和图标里面的内容啊
来源：1-2 Interceptor使用技巧
星辰很精彩
2023-02-11 00:23:06
视频中的：
我的结果：
代码如下：
pom.xml:
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.imooc</groupId> <artifactId>restful</artifactId> <version>1.0-SNAPSHOT</version> <properties> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> </properties> <repositories> <repository> <id>aliyun</id> <name>aliyun</name> <url>https://maven.aliyun.com/repository/public</url> </repository> </repositories> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.2.1.RELEASE</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.14.2</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.14.2</version> </dependency> <!--添加jackson注解形式--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.14.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> </dependencies> </project>
拦截器代码:
package com.imooc.restful.interceptor;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MyInterceptor implements HandlerInterceptor {
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//请求产生后 还没有进入Controller之前 执行 true就继续执行 false 不继续执行
System.out.println(request.getRequestURL() + "-URL准备执行");
//System.out.println(request.getRequestURI() + "-URI准备执行");
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
System.out.println(request.getRequestURL() + "-目标处理成功");
//controller方法 返回以后 还没有生成响应以前
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
System.out.println(request.getRequestURL() + "-响应内容已产生");
//产生响应文本以后 自动执行
}
}restful代码:
package com.imooc.restful.controller;
import com.imooc.restful.entity.Person;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
//设置单个跨域请求
//@CrossOrigin(origins = {"http://localhost:8080", "http://www.imooc.com" })
//@CrossOrigin(origins = "*",maxAge = 3600)//每一个网址都能访问 maxAge表示将预检结果保存多少秒 之后再执行预检请求
@RestController//默认返回的是 当前方法的数据
@RequestMapping("/restful")
public class RestfulController {
@GetMapping("/request")
//@ResponseBody
public String doGetRestful() {
return "{\"message\":\"返回结果查询\"}";
}
@PostMapping("/request/{rid}")
//@ResponseBody
public String doPostRestful(@PathVariable("rid") Integer requestId, Person person) {
System.out.println("姓名:" + person.getName() + ":" + "年龄:" + person.getAge());
//会自动将rid的数据注入到路径中
return "{\"message\":\"数据新建成功\",\"id\":" + requestId + "}";
}
@PutMapping("/request")
//@ResponseBody
public String doPutRestful(Person person) {
System.out.println("姓名:" + person.getName() + ":" + "年龄:" + person.getAge());
return "{\"message\":\"数据更新成功\"}";
}
@DeleteMapping("/request")
//@ResponseBody
public String doDeleteRestful() {
return "{\"message\":\"数据删除成功\"}";
}
//加入json数据包之后会自动生成json序列化
@GetMapping("/person")
public Person findByPersonId(Integer id) {
Person person = new Person();
if (id == 1) {
person.setName("张三");
person.setAge(20);
} else if (id == 2) {
person.setName("李四");
person.setAge(23);
}
return person;
}
@GetMapping("/persons")
public List<Person> findPersons() {
List<Person> people = new ArrayList<Person>();
Person p1 = new Person();
p1.setName("王五");
p1.setAge(26);
p1.setCreateTime(new Date());
people.add(p1);
Person p2 = new Person();
p2.setName("李四");
p2.setAge(27);
p2.setCreateTime(new Date());
people.add(p2);
return people;
}
}person代码：
package com.imooc.restful.entity;
import com.fasterxml.jackson.annotation.JsonFormat;
import java.util.Date;
public class Person {
private String name;
private Integer age;
//json时间处理方式
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
private Date createTime;
public Date getCreateTime() {
return createTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}client.html代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Restful实验室</title>
<script src="jquery-3.3.1.min.js"></script>
<script>
$(function () {
$("#btnGet").click(function () {
$.ajax({
url: "/restful/request",
type: "get",
dataType: "json",
success: function (json) {
$("#message").text(json.message);
}
});
})
});
$(function () {
$("#btnPost").click(function () {
$.ajax({
url: "/restful/request/100",
type: "post",
data: "name=lily&age=23",
dataType: "json",
success: function (json) {
$("#message").text(json.message + ":" + json.id);
}
})
});
});
$(function () {
$("#btnPut").click(function () {
$.ajax({
url: "/restful/request",
type: "put",
data: "name=lily&age=23",
dataType: "json",
success: function (json) {
$("#message").text(json.message);
}
})
});
});
$(function () {
$("#btnDelete").click(function () {
$.ajax({
url: "/restful/request",
type: "delete",
dataType: "json",
success: function (json) {
$("#message").text(json.message);
}
})
});
});
$(function () {
$("#btnPersons").click(function () {
$.ajax({
url: "/restful/persons",
type: "get",
dataType: "json",
success: function (json) {
console.info(json);
for (var i = 0; i < json.length; i++) {
var p = json[i];
$("#divPersons").append("<h2>" + p.name + "-" + p.age + "-" + p.createTime+"</h2>");
}
}
})
});
})
</script>
</head>
<body>
<input type="button" id="btnGet" value="发送get请求">
<input type="button" id="btnPost" value="发送post请求">
<input type="button" id="btnPut" value="发送put请求">
<input type="button" id="btnDelete" value="发送delete请求">
<h1 id="message"></h1>
<input type="button" id="btnPersons" value="查询所有人员">
<div id="divPersons"></div>
</body>
</html>applicationContext.xml文件:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 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"> <!--设置要使用的注解类 在那些包下面--> <context:component-scan base-package="com.imooc.restful"></context:component-scan> <!--启用springmvc注解形式--> <mvc:annotation-driven> <!--处理响应后的编码格式--> <mvc:message-converters> <bean class="org.springframework.http.converter.StringHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=utf-8</value> <value>application/json;charset=utf-8</value> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven> <!--忽略静态资源--> <mvc:default-servlet-handler/> <!--设置全局跨域请求--> <mvc:cors> <mvc:mapping path="/restful/**" allowed-origins="http://localhost:8080,http://com.imooc.com" max-age="3600"/> </mvc:cors> <mvc:interceptors> <mvc:interceptor> <!--对所有的请求进行拦截--> <mvc:mapping path="/**"/> <bean class="com.imooc.restful.interceptor.MyInterceptor"/> </mvc:interceptor> </mvc:interceptors> </beans>
jquery-3.3.1.min.js代码我就用的课上的
idea界面整体截图：同时上面标记那个啥意思啊？
写回答
2回答
-
好帮手慕小蓝
2023-02-11
同学你好，测试同学的代码之后，是可以正常显示js和icon的，猜测同学这里没有正常显示是因为浏览器缓存过js和icon文件，访问时没有请求服务器导致的。
建议同学清除一下浏览器缓存再尝试一下。
祝学习愉快~
1 -
星辰很精彩
提问者
2023-02-11
谢谢老师，已经解决，还有一个问题，请问idea提示这个是什么意思？要怎么操作呀
0
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