基于springmvc+spring-data-jpa+dubbo开发web应用

最近有项目客户要求使用dubbo进行服务关联和分布式部署,能基于dubbo发布分布式的rest服务和基于wsdl的webservice服务。看了下dubbo这个项目,其开发基本处于停滞状态,比较活跃的项目只有当当网维护的dubbox项目。本项目就是基于dubbox进行的。

项目模块如下图所示
img

用pom来组织Jar包依赖,dubbox我已经打包成Jar。可以看到项目分为四个模块。api提供rest和webservice的接口暴露,common是一些实体和工具类,server是数据库操作的模块,这里我们使用spring-data-jpa进行操作。web是前端应用,它通过api模块暴露的接口来调用远程dubbo服务,包括rest和webservice的。

api部分的实现

1、暴露rest接口

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
package cn.com.egova.easyshare.api.human;  

import cn.com.egova.easyshare.common.dto.ResultDto;
import cn.com.egova.easyshare.common.entity.Human;
import com.alibaba.dubbo.rpc.protocol.rest.support.ContentType;

import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

/**
* 人员相关接口
* Created by gongxufan on 2016/3/8.
*/
@Path("humans")
@Consumes({MediaType.APPLICATION_JSON, MediaType.TEXT_XML})
@Produces({ContentType.APPLICATION_JSON_UTF_8, ContentType.TEXT_XML_UTF_8})
public interface HumanActionApi<T> {

/**
* 获取人员信息
*
* @param id
* @return
*/
@GET
@Path("view/{id : \\d+}")
ResultDto<Human> getHuman(@PathParam("id") Integer id);
}

这里使用rest的注解暴露接口

2、暴露webservice

1
2
3
public interface WSDLServiceApi {  
List<NewsDto> fetchNews(@XmlJavaTypeAdapter(StringObjectMapAdapter.class) Map params);
}

webservice的写法很简单,只是需要注意要在接口返回的实体类上上加上xml的注解

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
package cn.com.egova.easyshare.common.dto;  

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import java.util.Date;

/**
* Created by gongxufan on 2016/3/30.
*/
@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
public class NewsDto {
@XmlElement
private Integer newsID;
@XmlElement
private String newsName;
@XmlElement
private String newsDescr;
@XmlElement
private String newsURL;
@XmlElement
private Integer newsTypeID;
@XmlElement
private Integer unitID;
@XmlElement
private Date createDate;
@XmlElement
private Date updateDate;
@XmlElement
private Integer displayOrder;
@XmlElement
private Integer openFlag = 0;
@XmlElement
private String op;

public Integer getNewsID() {
return newsID;
}

public void setNewsID(Integer newsID) {
this.newsID = newsID;
}

public String getNewsName() {
return newsName;
}

public void setNewsName(String newsName) {
this.newsName = newsName;
}

public String getNewsDescr() {
return newsDescr;
}

public void setNewsDescr(String newsDescr) {
this.newsDescr = newsDescr;
}

public String getNewsURL() {
return newsURL;
}

public void setNewsURL(String newsURL) {
this.newsURL = newsURL;
}

public Integer getNewsTypeID() {
return newsTypeID;
}

public void setNewsTypeID(Integer newsTypeID) {
this.newsTypeID = newsTypeID;
}

public Integer getUnitID() {
return unitID;
}

public void setUnitID(Integer unitID) {
this.unitID = unitID;
}

public Date getCreateDate() {
return createDate;
}

public void setCreateDate(Date createDate) {
this.createDate = createDate;
}

public Date getUpdateDate() {
return updateDate;
}

public void setUpdateDate(Date updateDate) {
this.updateDate = updateDate;
}

public Integer getDisplayOrder() {
return displayOrder;
}

public void setDisplayOrder(Integer displayOrder) {
this.displayOrder = displayOrder;
}

public Integer getOpenFlag() {
return openFlag;
}

public void setOpenFlag(Integer openFlag) {
this.openFlag = openFlag;
}

public String getOp() {
return op;
}

public void setOp(String op) {
this.op = op;
}
}

api模块单独分出来可以直接提供给其他模块进行调用

接口实现部分

使用dubbo服务

在app-config.xml中我们需要定义dubbo服务相关的信息,具体网上很多资料可以查看。

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
<?xml version="1.0" encoding="UTF-8"?>  
<!--
- Copyright 1999-2011 Alibaba Group.
-
- Licensed 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.
-->
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

<dubbo:application name="service-provider" owner="egova" organization="goutu"/>

<dubbo:registry address="zookeeper://127.0.0.1:2181" check="false"/>

<!--使Dubbo在Spring容器初始化完后,再暴露服务-->
<dubbo:provider delay="-1"/>
<!--uncomment this if you want to test dubbo's monitor-->
<!--<dubbo:monitor protocol="registry"/>-->
<!-- use tomcat server -->
<dubbo:protocol name="rest" port="8888" threads="500" contextpath="services" server="tomcat" accepts="1000"
extension="cn.com.egova.easyshare.api.extension.CustomExceptionMapper"/>

<dubbo:protocol name="webservice" port="8892" server="tomcat" contextpath="services"/>
</beans>

这里我们定义了rest和webservice协议,rest协议在8888下而webservice在8892下访问。需要注意的是,我们把这两个服务都跑在tomcat下。这样我们的接口实现部分可以打成war包部署在多个tomcat下,从而实现了接口服务的分布式部署。

这里只是作为演示,所以app-db.xml中的数据源定义都已经注释掉了。如果你想采用spring-data-jpa进行数据操作的话可以把注释去掉,然后去实现自己的Repository 。

web应用部分

这个就不用提了,我提供了一个测试页面测试接口。需要注意的是,web调用接口的配置是在dubbo-consumer.xml中

<?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:dubbo="http://code.alibabatech.com/schema/dubbo"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans  
        http://www.springframework.org/schema/beans/spring-beans.xsd  
        http://code.alibabatech.com/schema/dubbo  
        http://code.alibabatech.com/schema/dubbo/dubbo.xsd">  
    <!-- 消费方应用名,用于计算依赖关系,不是匹配条件,不要与提供方一样 -->  
    <dubbo:application name="dubbo-client" owner="egova-client" organization="goutu-client" />  
    <!-- zookeeper注册中心 -->  
    <dubbo:registry  protocol="zookeeper" address="127.0.0.1:2181" check="false"/>  
    <!-- 监控中心配置 -->  
    <!--<dubbo:monitor protocol="registry"/>-->  

    <!--关闭所有服务的启动可用性检查-->  
    <dubbo:consumer check="false" />  

     <!-- dubbo远程服务-->  
    <dubbo:reference id="humanAction"   interface="cn.com.egova.easyshare.api.human.HumanActionApi"/>  
    <dubbo:reference id="wSDLService"   interface="cn.com.egova.easyshare.webservice.WSDLServiceApi" />  
</beans>

在这里配置好zookeeper和api端的service,然后在contoller里就可以调用接口方法了。

end

代码下载地址:csdn下载
github: https://github.com/gongxufan/dubbo-demo

坚持原创,看官随意。
分享本文
0%