Java编写一个WebService并在Tomcat上发布

本例采用Myeclipse 2016 CI 6，JDK1.8 。新建一个Web Service Project。

选择如下设置：

在src目录下建个包:

编写一个接口，其中一个方法返回ArrayList，另一个方法返回JSON：

package Services;
import java.sql.SQLException;
import java.util.ArrayList;import javax.jws.WebMethod;
import javax.jws.WebService;@WebService
public interface ResultService<E> {public ArrayList<E> getResultInfo() throws SQLException;@WebMethodpublic String getJsonResultInfo();	
}

编写四个JavaBean实体类用于返回泛型ArrayList<E>类型：

package Services;public class Employee {		private String WORKCODE;private String LASTNAME;private Long SUBCOMPANYID1;private Long DEPARTMENTID1;private String JOBTITLEMARK;private String JOBCALL;private String JOBLEVEL;private long MANAGERID;private String STATUS;private String LOCATIONNAME;private String MOBILE;private String MOBILECALL;private String TELEPHONE;private String STARTDATE;private String LASTMODDATE;//set and get.......	
}

package Services;public class Company {private long ID;private String SUBCOMPANYNAME;//get and set.......
}

package Services;public class Dept {private long ID;private String DEPARTMENTNAME;private long SUPDEPID;private long SUBCOMPANYID1;private String DEPARTMENTMARK;private String CANCELED;//get and set......
}

package Services;public class DeptLeader {private long BMFZR;private long BM;//get and set....
}

编写四个子类实现上面这个接口，这里就只举例一个子类吧，其他三个模式一样：

package Services;import java.sql.SQLException;
import java.util.ArrayList;
import javax.jws.WebService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;@WebService
public class EmployeeServiceImpl implements ResultService<Employee>{private ArrayList<Employee> employees;private Log log = LogFactory.getLog(EmployeeServiceImpl.class.getName());@Overridepublic ArrayList<Employee> getResultInfo() throws SQLException {// TODO Auto-generated method stub		     PropertiesServiceImpl pro = new PropertiesServiceImpl();//配置文件信息读取类String conn =  pro.getConn();String user = pro.getUser();String password = pro.getPassword();String table = pro.getViewEmployee();JdbcUtils cs = new JdbcUtils(conn, user, password);//JDBC处理类String sqlString = "SELECT * FROM " + table;log.info("SQl:" + sqlString);employees = cs.queryEmployeeResult(sqlString);	return employees;}@Overridepublic String getJsonResultInfo() {// TODO Auto-generated method stubString str = "";try {Json<Employee> deJson = new Json<Employee>();//JSON处理类str = deJson.JsonStr(this.getResultInfo());} catch (SQLException e) {// TODO Auto-generated catch blocke.printStackTrace();}return str;}
}

其中，JSON类的代码如下图所示，该类能将ArrayList转化为Json字符串，如下图所示，使用JSONArray需要引用几个jar包，点击这里下载 json-lib jar包

package Services;
import java.util.ArrayList;
import net.sf.json.JSONArray;public class Json<E>{public String JsonStr(ArrayList<E> Lists){return JSONArray.fromObject(Lists).toString();}
}

编写ServicePublish类，里面有个main函数，用于本地发布测试。

package Services;
import javax.xml.ws.Endpoint;public class ServicePublish {	public static void main(String[] args){PropertiesServiceImpl pro = new PropertiesServiceImpl();String baseAddress = pro.getUrl();String employeeAddress = baseAddress + "Service/Employee";String companyAddress = baseAddress + "Service/Company";String deptAddress = baseAddress + "Service/Dept";String deptLeaderAddress = baseAddress + "Service/DeptLeader";Object implementorEmployee = new EmployeeServiceImpl();Object implementorCompany = new CompanyServiceImpl();Object implementorDept = new DeptServiceImpl();Object implementorDeptLeader = new DeptLeaderServiceImpl();Endpoint.publish(employeeAddress, implementorEmployee);		Endpoint.publish(companyAddress, implementorCompany);Endpoint.publish(deptAddress, implementorDept);Endpoint.publish(deptLeaderAddress, implementorDeptLeader);}
}

右键，选择"Run As" ——"Java Application"，如下图所示，进行本地编译测试：

能出现XML说明成功了，到此为止本地运行成功：

下面将此WebService部署到TomCat上

首先需要添加一些jar包，总共25个，将这25个jar包添加到Tomcat路径的lib文件夹下。25个jar包的目录如下图所示：点击这里下载这25个jar包

在web项目的WEB-INF目录下，创建sun-jaxws.xml配置文件，内容如下图所示：

然后还是在web项目的web-info目录下，创建web.xml配置文件，内容下图所示：

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"><display-name>BPMUserService</display-name><listener><listener-class>com.sun.xml.ws.transport.http.servlet.WSServletContextListener</listener-class>
</listener><servlet><servlet-name>EmployeeServiceImpl</servlet-name><servlet-class>com.sun.xml.ws.transport.http.servlet.WSServlet</servlet-class><load-on-startup>1</load-on-startup>
</servlet><servlet-mapping><servlet-name>EmployeeServiceImpl</servlet-name><url-pattern>/EmployeeServiceImpl</url-pattern>
</servlet-mapping><servlet-mapping><servlet-name>EmployeeServiceImpl</servlet-name><url-pattern>/CompanyServiceImpl</url-pattern>
</servlet-mapping><servlet-mapping><servlet-name>EmployeeServiceImpl</servlet-name><url-pattern>/DeptServiceImpl</url-pattern>
</servlet-mapping><servlet-mapping><servlet-name>EmployeeServiceImpl</servlet-name><url-pattern>/DeptLeaderServiceImpl</url-pattern>
</servlet-mapping></web-app>