【webservice】java客户端调用webservice                     返回主页

之前的文章介绍了如何写一个JAX-WS风格的webservice并发布。

本文将介绍如何在客户端调用webservice。

webservice

StudentSelect接口，定义将要调用的方法

package ch02.ts;

import java.sql.SQLException;
import javax.jws.WebMethod;
import javax.jws.WebService;
import javax.jws.soap.SOAPBinding;
import javax.jws.soap.SOAPBinding.Style;
@WebService
@SOAPBinding(style = Style.RPC)
public interface StudentSelect {
    @WebMethod
    void getStudent() throws SQLException;
    String getStudentinfo() throws SQLException;
}

类StudentSelectimpl实现StudentSelect接口，两个方法内容基本相同，都是从先建立数据库连接之后从数据库中取出一条学生信息

package ch02.ts;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

import javax.jws.WebService;
@WebService(endpointInterface = "ch02.ts.StudentSelect")
public class StudentSelectimpl implements StudentSelect {

    public void getConnection() {
        ConnectionToDB connectionToDB = new ConnectionToDB();
        connectionToDB.getCon();
    }

    @Override
    public void getStudent() throws SQLException {
        ConnectionToDB connectionToDB = new ConnectionToDB();
        String sql = "select * from studenttable where id=2013005620";
        java.sql.ResultSet rs = null;
        Connection connection = connectionToDB.getCon();

        Statement statement = connection.createStatement();

        System.out.print("数据库连接成功");

        rs = statement.executeQuery(sql);
        while (rs.next()) {
            String id = rs.getString("id");
            String gender = rs.getString("gender");
            String password = rs.getString("password");
            String name = rs.getString("name");
            String major = rs.getString("major");
            String age = rs.getString("age");
            String math = rs.getString("math");
            String cpp = rs.getString("cpp");
            String database = rs.getString("database");
            String java = rs.getString("Java");
            String english = rs.getString("english");
            String result = "\nthe result is:" + id + " " + gender + " " + name + " " +
                    password + " " + major + " " + age + " " + math + " " +
                            cpp + " " + database + " " + java + " " + english;
            System.out.println(result);
        }


    }
    @Override
    public String getStudentinfo() throws SQLException {
        ConnectionToDB connectionToDB = new ConnectionToDB();
        String sql = "select * from studenttable where id=2013005620";
        java.sql.ResultSet rs = null;
        Connection connection = connectionToDB.getCon();

        Statement statement = connection.createStatement();

        System.out.print("数据库连接成功");

        rs = statement.executeQuery(sql);
        while (rs.next()) {
            String id = rs.getString("id");
            String gender = rs.getString("gender");
            String password = rs.getString("password");
            String name = rs.getString("name");
            String major = rs.getString("major");
            String age = rs.getString("age");
            String math = rs.getString("math");
            String cpp = rs.getString("cpp");
            String database = rs.getString("database");
            String java = rs.getString("Java");
            String english = rs.getString("english");
            String result = "\nthe result is:" + id + " " + gender + " " + name + " " +
                    password + " " + major + " " + age + " " + math + " " +
                            cpp + " " + database + " " + java + " " + english;
            System.out.println(result);
            return result;
        }
        return null;
    }
}

类StudentServerPublisher用于发布该webservice，url为http://127.0.0.1:8765/ts

package ch02.ts;

import javax.xml.ws.Endpoint;

public class StudentServerPublisher {

    public static void main(String[] args) {
        Endpoint.publish("http://127.0.0.1:8765/ts", new StudentSelectimpl());
        System.out.println("已发布");
    }
}

类ConnectionToDB建立到数据库的连接

package ch02.ts;

import java.sql.Connection;
import java.sql.DriverManager;

public class ConnectionToDB {
    public Connection getCon() {
        try {
            Class.forName("com.mysql.jdbc.Driver");
            String url = "jdbc:mysql://localhost/studentmanagementsystem?useUnicode=true&characterEncoding=utf-8";
            String user = "snowalker";
            String password = "admin";
            Connection conn = DriverManager.getConnection(url, user, password);
            System.out.println("connnection success");
            System.out.println(conn.getMetaData().getURL());

            return conn;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) {
        ConnectionToDB connectionToDB = new ConnectionToDB();
        connectionToDB.getCon();
    }
}

此时访问http://127.0.0.1:8765/ts?wsdl应该能看到如下图所示结果

看到这个xml文件就表示发布成功

接下来进行客户端的编写

由于webservice是客户端无关的，所以理论上用任何语言都能实现调用，此处为了方便进行java客户端编写

Client类

package ch02.ts;

import java.net.URL;

import javax.xml.namespace.QName;
import javax.xml.ws.Service;

public class Client {
    public static void main(String[] args) throws Exception  {
        URL url = new URL("http://127.0.0.1:8765/ts?wsdl");
        QName qName = new QName("http://ts.ch02/", "StudentSelectimplService");
        Service service = Service.create(url, qName);
        StudentSelect elf = service.getPort(StudentSelect.class);
        System.out.println(elf.getStudentinfo());
        System.out.println("===============");
        elf.getStudent();
    }
}

运行结果

the result is:2013005620 女 林凌 2013005620 SE 21 99 88 99 88 99

小结：

这个只是简单的java客户端调用，之后想要实现安卓调用，继续学吧