Web Service用于開發分布式的交互操作的應用程序,是Web開發中經常用到的一門技術。本文我們一起來使用tomcat發布Web Service。

下面是tomcat發布Web Service的具體過程：

1、下載jax-ws依賴包

因tomcat沒有jax-ws所需的依賴環境，所以第一步先下載Jax-ws RI，即jax-ws reference implemantation, 地址：http://jax-ws.java.net

2、安裝jax-ws RI到tomcat服務器

先下載ant與tomcat,設置環境變量ANT_HOME與CATALINA_HOME，然后在path下引入各自的bin目錄打開命令提示符，在jax-ws ri包的目錄下運行ant install。

此命令會直接把需要的包導入到${tomcat}\shared\lib目錄下，其實也就是把jaxws RI lib下的包復制到了tomcat安裝目錄下shared\lib里面。

3、設置Eclipse中的tomcat

由于eclipse是自己定義的tomcat配置文件，所以需要加些東西，把shared\lib加入進來，打開ctalina.properties文件。

打開后為(節選)：

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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

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

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#

# 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配置項增加${catalina.home}/shared/lib/*.jar,${catalina.home}/shared/lib 這兩個路徑即可。

4、建立項目

新建一個web項目，webservice_web。

HelloService.java是提供web service的一個接口，代碼如下：

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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是實現類，代碼如下：

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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是通過web方式發布web service應用的描述文件，內容如下：

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

url-pattern="/hello" />

各個節點的具體說明請參考下載的jaxws ri包里面的docs文檔，在這里簡單說明一下，endpoint需要指定

web service服務的接口和實現類，以及它的url相對路徑

6、配置web.xml

內容如下：

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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、測試

啟動tomcat，在瀏覽器中輸入web service地址 http://localhost:8088/webservice_web/hello我的tomcat的端口號是8088，大家根據自己的端口號進行相應的修改。

以上就是tomcat發布Web Service的整個過程，小伙伴們學會了嗎?還有疑惑的小伙伴可以在本站的java視頻教程中找到相關課程，慢慢學習。