使用tomcat发布Web Service

Web Service用于开发分布式的交互操作的应用程序,是Web开发中经常用到的一门技术。本文我们一起来使用tomcat发布Web Service。

下面是tomcat发布Web Service的具体过程：

1、下载jax-ws依赖包

因tomcat没有jax-ws所需的依赖环境，所以第一步先下载Jax-ws RI，即jax-ws reference implemantation, 地址：http://jax-ws.java.net

2、安装jax-ws RI到tomcat服务器

先下载ant与tomcat,设置环境变量ANT_HOME与CATALINA_HOME，然后在path下引入各自的bin目录打开命令提示符，在jax-ws ri包的目录下运行ant install。

此命令会直接把需要的包导入到${tomcat}\shared\lib目录下，其实也就是把jaxws RI lib下的包复制到了tomcat安装目录下shared\lib里面。

3、设置Eclipse中的tomcat

由于eclipse是自己定义的tomcat配置文件，所以需要加些东西，把shared\lib加入进来，打开ctalina.properties文件。

打开后为(节选)：

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# Licensed to the Apache Software Foundation (ASF) under one or more

# contributor license agreements. See the NOTICE file distributed with

# this work for additional information regarding copyright ownership.

# The ASF licenses this file to You under the Apache License, Version 2.0

# (the "License"); you may not use this file except in compliance with

# the License. You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

#

# List of comma-separated packages that start with or equal this string

# will cause a security exception to be thrown when

# passed to checkPackageAccess unless the

# corresponding RuntimePermission ("accessClassInPackage."+package) has

# been granted.

package.access=sun.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper.

#

# List of comma-separated packages that start with or equal this string

# will cause a security exception to be thrown when

# passed to checkPackageDefinition unless the

# corresponding RuntimePermission ("defineClassInPackage."+package) has

# been granted.

#

# by default, no packages are restricted for definition, and none of

# the class loaders supplied with the JDK call checkPackageDefinition.

#

package.definition=sun.,java.,org.apache.catalina.,org.apache.coyote.,org.apache.tomcat.,org.apache.jasper.

#

#

# List of comma-separated paths defining the contents of the "common"

# classloader. Prefixes should be used to define what is the repository type.

# Path may be relative to the CATALINA_HOME or CATALINA_BASE path or absolute.

# If left as blank,the JVM system loader will be used as Catalina's "common"

# loader.

# Examples:

# "foo": Add this folder as a class repository

# "foo/*.jar": Add all the JARs of the specified folder as class

# repositories

# "foo/bar.jar": Add bar.jar as a class repository

common.loader=${catalina.home}/shared/lib/*.jar,${catalina.home}/shared/lib,${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar

找到common.loader配置项增加${catalina.home}/shared/lib/*.jar,${catalina.home}/shared/lib 这两个路径即可。

4、建立项目

新建一个web项目，webservice_web。

HelloService.java是提供web service的一个接口，代码如下：

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package com.zxuqian.webservice;

import javax.jws.WebMethod;

import javax.jws.WebService;

@WebService

public interface HelloService {

@WebMethod

String greetings (String name);

}

HelloServiceImpl.java是实现类，代码如下：

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package com.zxuqian.webservice.impl;

import javax.jws.WebService;

import com.zxuqian.webservice.HelloService;

@WebService (endpointInterface = "com.zxuqian.webservice.HelloService" )

public class HelloServiceImpl implements HelloService {

@Override

public String greetings(String name) {

return "Hello: " + name;

}

}

5、添加sun-jaxws.xml

sun-jaxws.xml是通过web方式发布web service应用的描述文件，内容如下：

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<endpoint implementation="com.zxuqian.webservice.impl.HelloServiceImpl" name="HelloWorld" p="" <="">

url-pattern="/hello" />

各个节点的具体说明请参考下载的jaxws ri包里面的docs文档，在这里简单说明一下，endpoint需要指定

web service服务的接口和实现类，以及它的url相对路径

6、配置web.xml

内容如下：

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  webservice_web 

    com.sun.xml.ws.transport.http.servlet.WSServletContextListener 

    hello 

    com.sun.xml.ws.transport.http.servlet.WSServlet 

    1 

    hello 

    /hello 

7、测试

启动tomcat，在浏览器中输入web service地址 http://localhost:8088/webservice_web/hello我的tomcat的端口号是8088，大家根据自己的端口号进行相应的修改。

以上就是tomcat发布Web Service的整个过程，小伙伴们学会了吗?还有疑惑的小伙伴可以在本站的java视频教程中找到相关课程，慢慢学习。