推荐回答(1个)
在Java中快速发布WebService服务方法:
一、通过Axis2提供的模板自动发布
这种方法非常简单,只要下载Axis包后从里面的“axis-1_4\webapps”中找到axis站点,将它拷出来放到你要部署的tomcat/webapps下,再将要发布的java类放到axis文件夹里,再将文件名的后缀改为“jws”,这样一个webservice就发布成功了。访问时按照路径“http://IP:Port/axis/类名.jws?wsdl”就可以了。
怎么样?这种方法非常是不是非常简单?对,它特别适合初学java或者是手头没有很好的SDE开发和调试工具的时候。
但很明显,这种方法不太好调试,又不能凸显您的专业水准,更不能集成到您的开发环境里。所以如果您不是很急,就可以用下面一种办法来发布:
二、通过JWS来手动发布
步骤如下:
1、在Eclipse里新建一个Dynamic Web Project,如下图所示(相信这一步您比我还熟,所以会的可以略过):
2、在“Project Name”中输入工程名称,如“JavaWebService”:
3、一直单击“Next”按钮直到出现如下对话框:
在上面的对话框中一定要注意需要选中“Generate web.xml deployment descriptor”,否则后面再添加就比较麻烦。选中后单击“Finish”按钮即可完成工程创建。
4、引入必须的jar包:
axis.jar、commons-discovery-0.2.jar、commons-logging.jar、jaxrpc.jar、saaj.jar、wsdl4j.jar
最好将jar包拷贝到工程的WEB-INF/lib下后直接引用本工程内的jar包,这样不会导致工程文件夹或jar包所在文件夹移动后读取不到jar包的问题:
分别单击顶层对话框和“Properties”对话框的“OK”按钮完成jar包引用。
5、新建package和java文件,如下图所示:
首先说说com.test.javabean.Student.java这个类。看得出来这个类是个JavaBean,目的是为了封装一个Java的实体类,这样做的好处是万一要把很多变量返回给客户端的话,客户端不至于在方法中声明很多形参来接收,而是通过一个对象来接收。Student.java的实现如下:
[java] view plain copy
package com.test.javabean;
import java.io.Serializable;
public class Student implements Serializable{
private String ID;
private String Name;
private String Sex;
private int age;
public String getID() {
return ID;
}
public void setID(String iD) {
ID = iD;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public String getSex() {
return Sex;
}
public void setSex(String sex) {
Sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
再来看看com.test.webservice.CStudent.java这个类,定义如下:
[java] view plain copy
package com.test.webservice;
import javax.jws.WebService;
import com.test.javabean.Student;
@WebService
public class CStudent {
public Student getStudent(String name) throws java.rmi.RemoteException{
Student student = new Student();
student.setName(name);
student.setAge(14);
student.setID("25");
student.setSex("Male");
return student;
}
}
为了简单起见,就不涉及到更多的后台查询了,先写死返回结果吧。不知您注意到了没有,这个类跟普通类的区别是在类的顶部加了个“@WebService”声明。对,这样就是个WebService方法了,是不是也很简单?但是这样就得记着在上面引入javax.jws.WebService包。偶对了,这种方式是JDK1.7里增加的方式,所以要想使用这种特性,就得麻烦您把JDK升级到1.7,方法很简单,用绿色版的就可以啦,不用劳烦您把JDK卸了又重装。只需要把JDK放到哪个盘的根目录(这样是为了防止路径中有空格或是括号什么的,否则一旦出问题您就苦逼了),然后把JDK的路径定义为JAVA_HOME,再在path中增加%JAVA_HOME%/bin;就可以了。这样做的好处是可以随时很方便地更换JDK的版本,而不需要卸载后再重新安装。
扯远了。有了WebService的方法体,您还需要再发布一下WebService,所以还得新建一个com.test.servlet.CStudentServlet.java类:
[java] view plain copy
package com.test.servlet;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Properties;
import javax.jws.WebService;
import javax.servlet.*;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.ws.Endpoint;
import com.test.webservice.CStudent;
public class CStudentServlet extends HttpServlet{
/**
* @see Servlet#init(ServletConfig)
*/
public void init(ServletConfig config) throws ServletException {
// TODO Auto-generated method stub
super.init(config);
System.out.println("正在启动WebService服务:http://192.168.56.1:8082/JavaWebService/Student");
Endpoint.publish("http://192.168.56.1:8082/JavaWebService/Student", new CStudent());
}
/**
* @see Servlet#getServletConfig()
*/
public ServletConfig getServletConfig() {
// TODO Auto-generated method stub
return null;
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
System.out.println("进入WSServlet的service()方法");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
}
上面的代码中有处细节不知您注意了没有:把IP地址、端口号、站点名等信息写死到了代码里。对,不仅如此,你这里写的什么IP,就必须用什么IP访问,即便是在本机写成localhost都不可以。jws就是这么奇怪。所以在实际中可以参考一些资料动态获取IP地址和端口号。
对了,您那边代码是不是报错了?对,这是因为您还得做一步操作——添加server和对server组件包的引用,以tomcat为例,方法如下:
找到servers窗口,单击“new server wizard...”链接:
打开如下对话框:
看到了吧?选择Apache下的”Tomcat v7.0 Server“,然后单击”Next“:
在上图中单击右侧”Browse“按钮,找到Tomcat所在的目录,再在JRE中选择1.7的JDK。如果您还没有配置JDK,就请自行查找资料进行配置吧,某在这里就不讲了,不然又扯远啦。
然后进入这个窗口:
这个对话框得特别留意一下,不要着急单击”Add“按钮添加站点那,否则启动后您就找不到站点部署的位置了。所以这一步直接单击”Finish“。完毕后双击新添加的server,打开如下对话框:
在上面的窗口中,一定要先选择第二项”Use Tomcat installation (takes control of Tomcat installation)“,然后在”Deploy path“中将内容改为”webapps“,然后再按下”Ctrl+S“键保存配置,这样就可以把站点部署到您指定的tomcat的webapps下了。
然后记着给站点添加servlet-api.jar包的引用,在工程上单击右键,选择”Properties“,打开如下对话框:
看到了吧?切换到”Libraries“选项卡后先点击右侧的”Add Library“按钮,再在弹出的窗口中选择”Server Runtime“,单击”Next“-->“Finish”和父窗口的”OK“按钮就可以成功引入servlet所需的jar包了。怎么样?CStudentServlet.java中再没有错误提示了吧?
下一步需要将servlet配置为自启动,您只要在web.xml中增加如下内容就可以了:
[html] view plain copy
CStudentServlet
com.test.servlet.CStudentServlet
1
CStudentServlet
/servlet/CStudentServlet
记着把站点发布一下,在tomcat上单击邮件,选择“Add and Remove”,将JavaWebService发布到tomcat中。
下一步只要发布和启动一下站点就可以了。如果您还不会,那就在server上单击右键,选择“Publish”,然后再选择“Start”就可以了。
启动成功
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