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泪奔，调了两天终于调成了。先说说遇到的问题
Jersey 1.x 和 2.x项目内的config不同，且jersey 2.x 把 com.sun.jersey的路径改成了org.glassfish.jersey，这是最大的坑。笔者一开始没注意，开着1.x的教程用了2.x的包，即使后来发现了这个问题，但由于1.x陷的太深而改不回来了。
同学们会说，那改用1.x的包不就好啦。事实并非那么简单，jersey1.1和1.9的配置也不同，且官方现在只提供1.9的下载，下载下来有N多jar包，好吧，按照教程做，结果tomcat蹦了。仔细查看教程的tomcat版本是6.0，我用的是8.0.
这真是落泪了，变量一路增加，让我真是日了狗的心情都有了，两天调下来真是泪奔，还好最后发现了一篇靠谱的文章，现在来具体说说方法
环境
1. asm-3.1.jar
2. gson-2.3.1.jar
3. jersey-bundle-1.17.1.jar
4. mysql-connector-java-5.1.38-bin.jar
5. Tomcat 8.0
其实真正deploy ws时用到的只有3
项目结构
2. DAO&DTO
package com.qad.yab.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class CVCJDBC {
private Connection conn;
public Connection getConn() throws ClassNotFoundException, SQLException {
if (null != conn) {
return conn;
} else {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test1", "cvc", "");
System.out.println("connect success");
return conn;
}
}
}
package com.qad.yab.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import com.qad.yab.dto.User;
public class CVCUserDAO {
private Connection conn;
public ArrayList<User> getUsers() throws Exception {
conn = new CVCJDBC().getConn();
String sql = "select * from user;";
PreparedStatement stmt = conn.prepareStatement(sql);
ResultSet result = stmt.executeQuery();
ArrayList<User> datas = new ArrayList<User>();
while (result.next()) {
User data = new User();
data.setId(result.getInt("id"));
data.setLoginID(result.getString("LoginID"));
data.setName(result.getString("name"));
data.setEmail(result.getString("email"));
datas.add(data);
}
stmt.close();
return datas;
}
}
package com.qad.yab.dto;
public class User {
private int id;
private String loginID;
private String name;
private String email;
private boolean active;
/**
* Default constructor to create new user
*/
public User() {
super();
}
/**
* Create new user with user name
*
* @param name
* the login ID
*/
public User(String loginID) {
super();
this.loginID = loginID;
}
/**
* @return the id
*/
public int getId() {
return id;
}
/**
* @param id
* the id to set
*/
public void setId(int id) {
this.id = id;
}
/**
* @return the loginID
*/
public String getLoginID() {
return loginID;
}
/**
* @param loginID
* the loginID to set
*/
public void setLoginID(String loginID) {
this.loginID = loginID;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name
* the name to set
*/
public void setName(String name) {
this.name = name;
}
/**
* @return the email
*/
public String getEmail() {
return email;
}
/**
* @param email
* the email to set
*/
public void setEmail(String email) {
this.email = email;
}
/**
* @return the active
*/
public boolean isActive() {
return active;
}
/**
* @param active
* the active to set
*/
public void setActive(boolean active) {
this.active = active;
}
}
4. WebService
package com.qad.yab.ws;
import java.util.ArrayList;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import com.google.gson.Gson;
import com.qad.yab.dao.CVCUserDAO;
import com.qad.yab.dto.User;
@Path("/webService")
public class UserService {
@GET
@Path("/cvcuser")
@Produces("application/json")
public String user() throws Exception {
String users = null;
CVCUserDAO dao = new CVCUserDAO();
ArrayList<User> datas = dao.getUsers();
Gson gson = new Gson();
users = gson.toJson(datas);
return users;
}
}
5. web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"> <display-name>YAB-CVC-WS</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>ServletService</servlet-name> <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer </servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>ServletService</servlet-name> <url-pattern>/REST/*</url-pattern> </servlet-mapping> </web-app>
特别需要提醒的是servlet class，使用不同版本的jar包所用的class是不同的T_T，深受其害的飘过
http://localhost:8080/YAB-CVC-WS/REST/webService/cvcuser
YAB-CVC-WS：项目名
REST：URL-PATTERN
webService: 在WS类中有定义
cvcuser: 在WS类中有定义
附解我大坑的文章
http://www.dineshonjava.com/2013/06/restful-web-services-with-jersey-jax-rs.html#.VxCy7Pl96Ul
Deploy 1.x Jersey WebServices on Tomcat
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原文地址：http://www.cnblogs.com/Raymond-Yang/p/5396340.html
