公司不同pool之间提供service都是通过hessian来开放接口的，个人觉得hessian的使用非常简单。做个demo如下：
0.首先创建web工程，并加载hessian.jar。
1.创建service，即我们通过它来提供接口：
[java]
public interface BasicService {
public void setServiceName(String serverName);
public String getServiceName();
public User createUser();
}
2.创建service实现：
[java]
public class BasicServiceImpl implements BasicService {
private String serviceName;
@Override
public void setServiceName(String serverName) {
this.serviceName = serverName;
}
@Override
public String getServiceName() {
return this.serviceName;
}
@Override
public User createUser() {
return new User("zhangsan", "123456");
}
}
3.创建需要通过hessian传递的对象（必须序列化）：
[java]
public class User implements Serializable {
private static final long serialVersionUID = 5792818254468116836L;
private String username;
private String password;
public User(String username, String password) {
this.username = username;
this.password = password;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
4.配置web.xml:
[html]
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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>HessianServer</display-name>
<servlet>
<servlet-name>basic</servlet-name>
<servlet-class>com.caucho.hessian.server.HessianServlet</servlet-class>
<init-param>
<param-name>service-class</param-name>
<param-value>com.loujinhe.service.impl.BasicServiceImpl</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>basic</servlet-name>
<url-pattern>/basic</url-pattern>
</servlet-mapping>
</web-app>
5.创建测试用例：
[java]
import java.net.MalformedURLException;
import org.junit.Before;
import org.junit.Test;
import com.caucho.hessian.client.HessianProxyFactory;
import com.loujinhe.service.BasicService;
public class BasicServiceTest {
private BasicService basicService;
@Before
public void init() throws MalformedURLException {
HessianProxyFactory factory = new HessianProxyFactory();
String url = "http://localhost:8080/HessianServer/basic";
basicService = (BasicService)factory.create(BasicService.class, url);
}
@Test
public void testBasic() {
basicService.setServiceName("BasicService");
System.out.println(basicService.getServiceName());
System.out.println(basicService.createUser().getUsername());
System.out.println(basicService.createUser().getPassword());
}
}
6.启动服务器，运行测试用例，会得到如下结果：
BasicService
zhangsan
123456
