gpt4 book ai didi

java - 使用jquery ajax调用rest webservice?

转载 作者:行者123 更新时间:2023-12-01 11:40:06 25 4
gpt4 key购买 nike

我尝试了几个教程来使用 jQuery ajax 调用来调用其余 Web 服务,但我没有得到响应。

但是当我直接在浏览器中点击 url 时,我得到了响应,但无法使用 ajax 调用获得相同的 json 响应,总是进入错误 block 。(tomcat正在端口8888上运行)

http://localhost:8888/WebService_2/rest/webservice

Index.jsp 文件。

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<body>
<table>
<tr>
<td><input type="button" value="submit" id="submit"> </td>
</tr>
</table>
</body>

<script type="text/javascript">
$(document).ready(function(){

$("#submit").click(function(){
$.ajax({
type: "GET",
dataType:"json",
contentType: "application/json; charset=utf-8",
url: "http://localhost:8888/WebService_2/rest/webservice",
success: function(data1) {
console.log("response:" + data1);
},
error: function(jqXHR, textStatus, errorThrown) {
console.log(' Error in processing!');

}
});
});
});
</script>
</html>

WebSerivce 类。

package com.app.rest;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

@Path("/webservice")
public class WebSerivce {

@GET
@Produces(MediaType.APPLICATION_JSON)
public String getResponse(){
return "Web Service Response Call " ;
}
}

web.xml

<servlet>
<servlet-name>jersey-serlvet</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.app.rest</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>


<servlet-mapping>
<servlet-name>jersey-serlvet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>

最佳答案

谷歌一番后得到答案...我已经使用 google jar 进行 JSON 转换

Pom.xml

<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.2.4</version>
</dependency>

WebService.class

import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

@Path("/webservice")
public class WebService {

@GET
@Produces(MediaType.APPLICATION_JSON)
public Object getResponse(){
//firstName,LastName,Age,Id
Student std1 = new Student("ik","test",22,2);
Student std2 = new Student("John","Vector",23,3);
Student std3 = new Student("iks","Roy",25,4);
List<Student> stuList = new ArrayList<Student>();
stuList.add(std1);
stuList.add(std2);
stuList.add(std3);
Gson gson = new GsonBuilder().create();
return gson.toJson(stuList);
}
}

索引.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<body>
<form method="get">
<table>
<tr>
<td><input type="button" value="submit" id="submit"> </td>
<div id="data"></div>
</tr>
</table>
</form>
</body>

<script type="text/javascript">
$(document).ready(function(){
var val = "";
$("#submit").click(function(event){
event.preventDefault();

$.ajax({
type: "GET",
dataType:"json",
url: "rest/webservice",
success: function(data) {
console.log("response:" + data);
$.each(data, function(j, pdata) {
val= val + "[ "+pdata.firstName +" " + pdata.lastName +"]";
});
$("#data").text(val);
},
error: function(jqXHR, textStatus, errorThrown) {
console.log(' Error in processing! '+textStatus);
}
});
});
});
</script>
</html>

关于java - 使用jquery ajax调用rest webservice?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/29599968/

25 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com