hessian简单示例

创建一个对外接口

public interface Basic {    String hello(String name);    String say(String msg);    int sum(int a,int b);}

实现该接口并继承HessianServlet

public class BasicService extends HessianServlet implements Basic {    @Override    public String hello(String name) {        return "Hello " + name;    }    @Override    public int sum(int a, int b) {        return a + b;    }    @Override    public String say(String msg) {        return "Say:" + msg;    }}

配置web.xml

<servlet>  <servlet-name>hello</servlet-name>  <servlet-class>com.abel533.hessian.BasicService</servlet-class></servlet><servlet-mapping>  <servlet-name>hello</servlet-name>  <url-pattern>/hello</url-pattern></servlet-mapping>

启动服务器

客户端代码

public class Client {    interface Hello {        String hello(Object name);    }    interface SumSay {        String say(String msg);        int sum(int a, int b);        int hi(String hi);    }    public static void main(String[] args) throws MalformedURLException {        //TODO 根据实际地址修改        String url = "http://localhost:8090/hello";        HessianProxyFactory factory = new HessianProxyFactory();        Hello basic = (Hello) factory.create(Hello.class, url);        System.out.println(basic.hello(123));        SumSay sumSay = (SumSay) factory.create(SumSay.class, url);        System.out.println(sumSay.say("你好!"));        System.out.println("10+20=" + sumSay.sum(10, 20));    }}

在客户端中创建了两个接口，接口名和最上面Basic中的部分接口是一样的。
经过简单的测试发现，只要方法名一致，并且参数个数一致，就可以成功调用。