hessian实战1

Posted 2020-10-19 甜菜波波

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服务端：

1.新建MAVEN HessianServer 项目

2.新建接口 Basic

public interface Basic {
    String hello(String name);

    String say(String msg);

    int sum(int a,int b);
}

3.新建 BasicService 类，extends HessianServlet implements Basic

import com.caucho.hessian.server.HessianServlet;
public class BasicService extends HessianServlet implements Basic {

    public String hello(String name) {
        return "Hello " + name;
    }


    public int sum(int a, int b) {
        return a + b;
    }


    public String say(String msg) {
        return "Say:" + msg;
    }
}

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4.web.xml 文件

<?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">

    <servlet>
        <servlet-name>hello</servlet-name>
        <servlet-class>BasicService</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>hello</servlet-name>
        <url-pattern>/hello</url-pattern>
    </servlet-mapping>



</web-app>

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5.POM.XML

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>HessianWeb</groupId>
    <artifactId>HessianWeb</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
        <groupId>com.caucho</groupId>
        <artifactId>hessian</artifactId>
        <version>4.0.51</version>
    </dependency>

    </dependencies>

</project>

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启动项目，在浏览器打开 http://localhost:8091/hello 显示 Hessian Requires POST ，说明服务已启动

客服端（不使用spring）：

1.新建HessianClient maven 项目

2.pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>HessianClient</groupId>
    <artifactId>HessianClient</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>com.caucho</groupId>
            <artifactId>hessian</artifactId>
            <version>4.0.51</version>
        </dependency>


    </dependencies>


</project>

3.新建接口Client

public interface Client {
    String hello(String name);

    String say(String msg);

    int sum(int a,int b);
}

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4.新建Test类

import com.caucho.hessian.client.HessianProxyFactory;
import com.caucho.hessian.server.HessianServlet;

import java.net.MalformedURLException;

public class Test {

    public static void main(String[] args) throws MalformedURLException {
        //TODO 根据实际地址修改
        String url = "http://localhost:8091/hello";
        HessianProxyFactory factory = new HessianProxyFactory();
        Client basic = (Client) factory.create(Client.class, url);
        System.out.println(basic.hello("aaa"));

    }
}

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5.运行该项目，显示 aaa

客户端(使用spring)

1.pom.xml 改为

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>HessianClient</groupId>
    <artifactId>HessianClient</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.0.1</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>com.caucho</groupId>
            <artifactId>hessian</artifactId>
            <version>4.0.51</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.2.1.RELEASE</version>
            <scope>compile</scope>
        </dependency>


    </dependencies>


</project>

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2.新建remote-client.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">




    <!-- 客户端Hessian代理工厂Bean -->
    <bean id="clientSpring" class="org.springframework.remoting.caucho.HessianProxyFactoryBean">
        <!-- 请求代理Servlet路径 -->
        <property name="serviceUrl">
            <value>http://localhost:8091/hello</value>
        </property>
        <!-- 接口定义 -->
        <property name="serviceInterface">
            <value>Client</value>
        </property>
    </bean>
</beans>

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3.新建Test2类

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test2 {

    public static void main(String[] args) {
        ApplicationContext contex = new ClassPathXmlApplicationContext(
                "remote-client.xml");

        // 获得客户端的Hessian代理工厂bean
        Client i = (Client) contex.getBean("clientSpring");
        System.out.println(i.hello("chen1231231231"));
    }
}

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运行该项目显示 Hello chen1231231231

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