码迷,mamicode.com
首页 > 编程语言 > 详细

[CXF REST标准实战系列] 一、JAXB xml与javaBean的转换

时间:2015-02-09 21:45:13      阅读:291      评论:0      收藏:0      [点我收藏+]

标签:

Writer:BYSocket(泥沙砖瓦浆木匠)

Reprint it anywhere u want.

文章Points:

1、不认识到犯错,然后得到永久的教训。

2、认识JAXB

3、代码实战

 

1、不认识到犯错,然后得到永久的教训。

  也不是所谓的教训吧,真正的教训来自于对错误的剖析理解很深刻。然后有种“吃一堑,长一智”的感觉才叫教训。近日和团队工头们用CXF3.0和Spring4.0开发一个平台,模仿着第三方支付,用xml进行数据交互。

  因此,搜了下。果断用了dom4j,用自己键盘papa打了个叫做XmlOjbUtil的工具类。后来百度下,虽然不是万能的百度。但也要表扬下,发现人家搭着REST的CXF却集成了Jaxb。

  果断抛弃了!(有时候决定就需要这么果断。)

先做个铺垫,我们先说下一些知识点:

  CXF实现webService项目,有两种模式可以开发。Jax-ws实现经典的Web Service和Jax-rs实现REST标准。在Java EE 5/6中,Jaxb可以方便地集成,负责xml与JavaBean的映射。其实Jaxb也可以作为xml解析的一种技术。

2、认识JAXB

  JAXB(Java Architecture for XML Binding)是根据XML Schema映射到JavaBean的技术。过程中,JAXB将XML实例文档反向生成Java对象树的方法,并能将Java对象树的内容重新写到 XML实例文档。

  在JDK1.6时,JAXB 2.0是JDK 1.6的组成部分。JAXB 2.2.3是JDK 1.7的组成部分。

提前修一下文档知识吧:

  JDK中JAXB相关的重要Class和Interface:

  1、JAXBContext类,是应用的入口,用于管理XML/Java绑定信息。

  2、Marshaller接口,将Java对象序列化为XML数据。

  3、Unmarshaller接口,将XML数据反序列化为Java对象。

 
  JDK中JAXB相关的重要Annotation:

  1、@XmlType,将Java类或枚举类型映射到XML模式类型

  2、@XmlAccessorType(XmlAccessType.FIELD) ,控制字段或属性的序列化。FIELD表示JAXB将自动绑定Java类中的每个非静态的(static)、非瞬态的(由@XmlTransient标注)字段到XML。其他值还有XmlAccessType.PROPERTY和XmlAccessType.NONE。

  3@XmlAccessorOrder,控制JAXB 绑定类中属性和字段的排序。

  4、@XmlJavaTypeAdapter,使用定制的适配器(即扩展抽象类XmlAdapter并覆盖marshal()和unmarshal()方法),以序列化Java类为XML。

  5、@XmlElementWrapper ,对于数组或集合(即包含多个元素的成员变量),生成一个包装该数组或集合的XML元素(称为包装器)。

  6、@XmlRootElement,将Java类或枚举类型映射到XML元素。

  7、@XmlElement,将Java类的一个属性映射到与属性同名的一个XML元素。

  8、@XmlAttribute,将Java类的一个属性映射到与属性同名的一个XML属性。

 

技术分享

 

3、代码实战

我们既然要设计报文,所以我这边拿出来一个注册的Bean的设计。首先我们设计注册的Bean,代码如下:

DataBean.java

?
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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
package com.xidian.wq.imaopay.model.mesdata.base;
 
import javax.xml.bind.annotation.XmlRootElement;
 
/**
 *
 * @author BYSocket
 * 报文头-[报文基础信息]
 */
@XmlRootElement(name="data_bean")
public class DataBean
{
    // 版本信息(data_version)
    String version;
     
    ////消息类型(data_type)
    // 000001 - 注册[个人信息Post|Respose]
    // 000002 - 绑定银行卡[首次绑定,保存个人信息]
    // 000003 - 绑定银行卡[二次,校验个人信息]
    // 100001 - 支付[钱包支付]
    // 100002 - 查询
    // 200001
    String data_type;
     
    ////订单编号(order_id)
    // 总长20位, 有字母要用大写
    String batch_no;
     
    // 平台账号(platform_account)
    String user_name;
     
    ////请求状态
    // 000
    String trans_state;
     
    // 签名信息(msg_sign)
    String msg_sign;
 
    // 时间戳(randomTime)
    private String rd_time;
 
    // 随机数(randomNum)
    private String rd_num;
 
    // 密钥(keySign)
    private String k_sign;
     
    // 保留域
    String reserve;
 
    public String getVersion()
    {
        return version;
    }
 
    public void setVersion(String version)
    {
        this.version = version;
    }
 
    public String getData_type()
    {
        return data_type;
    }
 
    public void setData_type(String data_type)
    {
        this.data_type = data_type;
    }
 
    public String getBatch_no()
    {
        return batch_no;
    }
 
    public void setBatch_no(String batch_no)
    {
        this.batch_no = batch_no;
    }
 
    public String getUser_name()
    {
        return user_name;
    }
 
    public void setUser_name(String user_name)
    {
        this.user_name = user_name;
    }
 
    public String getTrans_state()
    {
        return trans_state;
    }
 
    public void setTrans_state(String trans_state)
    {
        this.trans_state = trans_state;
    }
 
    public String getMsg_sign()
    {
        return msg_sign;
    }
 
    public void setMsg_sign(String msg_sign)
    {
        this.msg_sign = msg_sign;
    }
 
    public String getRd_time()
    {
        return rd_time;
    }
 
    public void setRd_time(String rd_time)
    {
        this.rd_time = rd_time;
    }
 
    public String getRd_num()
    {
        return rd_num;
    }
 
    public void setRd_num(String rd_num)
    {
        this.rd_num = rd_num;
    }
 
    public String getK_sign()
    {
        return k_sign;
    }
 
    public void setK_sign(String k_sign)
    {
        this.k_sign = k_sign;
    }
 
    public String getReserve()
    {
        return reserve;
    }
 
    public void setReserve(String reserve)
    {
        this.reserve = reserve;
    }
 
}

RegBean.java

?
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
<fontsize="4"face="宋体">package com.xidian.wq.imaopay.model.mesdata.base;
 
 
import javax.xml.bind.annotation.XmlRootElement;
 
/**
 *
 * @author BYSocket
 * 报文体-[用户注册报文体信息]
 */
@XmlRootElement(name="reg_bean")
public class RegBean
{
     
    // 注册报文体流水号(reg_data_sn)
    private String reg_sn;
     
    ////用户编号(user_info_id)
    // 业务系统的用户编号只做记录不在支付系统中逻辑处理
    private Integer user_id;
 
    // 注册账号(reg_account)
    private String reg_no;
     
    // 注册途径(reg_way)
    private String reg_way;
     
    // 保留域
    private String reserve;
     
    ////提交日期(set_time)
    // 业务系统上传
    private String set_time;
     
    // 后台信息返回路径(return_url)
    private String ret_url;
     
    // 备注
    String remarks;
 
    public String getReg_sn()
    {
        return reg_sn;
    }
 
    public void setReg_sn(String reg_sn)
    {
        this.reg_sn = reg_sn;
    }
 
    public Integer getUser_id()
    {
        return user_id;
    }
 
    public void setUser_id(Integer user_id)
    {
        this.user_id = user_id;
    }
 
    public String getReg_no()
    {
        return reg_no;
    }
 
    public void setReg_no(String reg_no)
    {
        this.reg_no = reg_no;
    }
 
    public String getReg_way()
    {
        return reg_way;
    }
 
    public void setReg_way(String reg_way)
    {
        this.reg_way = reg_way;
    }
 
    public String getReserve()
    {
        return reserve;
    }
 
    public void setReserve(String reserve)
    {
        this.reserve = reserve;
    }
 
    public String getSet_time()
    {
        return set_time;
    }
 
    public void setSet_time(String set_time)
    {
        this.set_time = set_time;
    }
 
    public String getRet_url()
    {
        return ret_url;
    }
 
    public void setRet_url(String ret_url)
    {
        this.ret_url = ret_url;
    }
 
    public String getRemarks()
    {
        return remarks;
    }
 
    public void setRemarks(String remarks)
    {
        this.remarks = remarks;
    }
 
}
</font>

注册报文体MsgRegBean.java,支持内容的列表。

?
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
package com.xidian.wq.imaopay.model.mesdata;
 
import java.util.List;
 
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;
 
import com.xidian.wq.imaopay.model.mesdata.base.DataBean;
import com.xidian.wq.imaopay.model.mesdata.base.RegBean;
 
@XmlRootElement( name = "msg_bean" )
public class MsgRegBean
{
    private DataBean dataBean;
     
    private List<RegBean> regBeans;
 
     
    public DataBean getDataBean()
    {
        return dataBean;
    }
 
    @XmlElement(name = "data_bean")
    public void setDataBean(DataBean dataBean)
    {
        this.dataBean = dataBean;
    }
 
    @XmlElementWrapper(name = "reg_beans") 
    @XmlElement(name = "reg_bean")
    public List<RegBean> getRegBeans()
    {
        return regBeans;
    }
 
    public void setRegBeans(List<RegBean> regBeans)
    {
        this.regBeans = regBeans;
    }
 
}

然后针对的我们用Jaxb实现一个转换的Util类:

?
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
<fontsize="4"face="宋体">package com.xidian.wq.imaopay.util;
import java.io.StringReader; 
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
 
import javax.xml.bind.JAXBContext; 
import javax.xml.bind.JAXBException; 
import javax.xml.bind.Marshaller; 
import javax.xml.bind.Unmarshaller; 
 
import com.alibaba.fastjson.JSON;
import com.xidian.wq.imaopay.model.mesdata.MsgRegBean;
import com.xidian.wq.imaopay.model.mesdata.base.DataBean;
import com.xidian.wq.imaopay.model.mesdata.base.RegBean;
 
/**
 *  
 * @author BYSocket
 * Jaxb2.0 处理Xml与Object转换
 *
 */
public class JaxbObjectAndXmlUtil
       
    /**
     * @param xmlStr 字符串
     * @param c 对象Class类型
     * @return 对象实例
     */
    @SuppressWarnings("unchecked")
    public static <T> T xml2Object(String xmlStr,Class<T> c)
    { 
        try
        { 
            JAXBContext context = JAXBContext.newInstance(c); 
            Unmarshaller unmarshaller = context.createUnmarshaller(); 
             
            T t = (T) unmarshaller.unmarshal(new StringReader(xmlStr)); 
             
            return t; 
             
        } catch (JAXBException e) {  e.printStackTrace();  return null; } 
         
    } 
       
    /**
     * @param object 对象
     * @return 返回xmlStr
     */
    public static String object2Xml(Object object)
    { 
        try
        {   
            StringWriter writer = new StringWriter();
            JAXBContext context = JAXBContext.newInstance(object.getClass()); 
            Marshaller  marshal = context.createMarshaller();
             
            marshal.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); // 格式化输出 
            marshal.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");// 编码格式,默认为utf-8 
            marshal.setProperty(Marshaller.JAXB_FRAGMENT, false);// 是否省略xml头信息 
            marshal.setProperty("jaxb.encoding", "utf-8"); 
            marshal.marshal(object,writer);
             
            return new String(writer.getBuffer());
             
        } catch (Exception e) { e.printStackTrace(); return null;}    
         
    } 
     
    public static void main(String[] args)
    {
         /** 构造测试报文头对象 */
        DataBean dataBean = new DataBean();
        dataBean.setBatch_no("N20150204");
        dataBean.setData_type("000001");
        dataBean.setVersion("v1.0");
        dataBean.setUser_name("xx");
        dataBean.setMsg_sign("未知");
        dataBean.setRd_num("6631383");
        dataBean.setRd_time("20150204");
        dataBean.setK_sign("75CC479AAC09F00BA28F0E968B1BC9D1B90ADCC2");
 
        /** 构造测试报文体对象 */
        RegBean regBean = new RegBean();
        regBean.setReg_sn("REG20150204");
        regBean.setUser_id(12);
        regBean.setReg_no("33");
        regBean.setReg_way("pc");
        regBean.setSet_time("20150204 16:18");
        regBean.setRet_url("未知");
        regBean.setRemarks("无备注");
         
        MsgRegBean msgBean = new MsgRegBean();
        List<RegBean> regBeans = new ArrayList<RegBean>();
        regBeans.add(regBean);
        regBeans.add(regBean);
         
        msgBean.setRegBeans(regBeans);
        msgBean.setDataBean(dataBean);
         
        String xmlStr = JaxbObjectAndXmlUtil.object2Xml(msgBean);//构造报文 XML 格式的字符串
        System.out.println("对象转xml报文: \n"+xmlStr);
         
        MsgRegBean msgBean2 = JaxbObjectAndXmlUtil.xml2Object(xmlStr, MsgRegBean.class);
        System.out.println("报文转xml转: \n"+JSON.toJSONString(msgBean2));
    }
}  </font>

运行下测试main函数,可以得到如下的输出:

?
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
对象转xml报文:
<?xmlversion="1.0"encoding="utf-8"standalone="yes"?>
<msg_bean>
    <data_bean>
        <batch_no>N20150204</batch_no>
        <data_type>000001</data_type>
        <k_sign>75CC479AAC09F00BA28F0E968B1BC9D1B90ADCC2</k_sign>
        <msg_sign>未知</msg_sign>
        <rd_num>6631383</rd_num>
        <rd_time>20150204</rd_time>
        <user_name>xx</user_name>
        <version>v1.0</version>
    </data_bean>
    <reg_beans>
        <reg_bean>
            <reg_no>33</reg_no>
            <reg_sn>REG20150204</reg_sn>
            <reg_way>pc</reg_way>
            <remarks>无备注</remarks>
            <ret_url>未知</ret_url>
            <set_time>20150204 16:18</set_time>
            <user_id>12</user_id>
        </reg_bean>
        <reg_bean>
            <reg_no>33</reg_no>
            <reg_sn>REG20150204</reg_sn>
            <reg_way>pc</reg_way>
            <remarks>无备注</remarks>
            <ret_url>未知</ret_url>
            <set_time>20150204 16:18</set_time>
            <user_id>12</user_id>
        </reg_bean>
    </reg_beans>
</msg_bean>
 
报文转xml转:
{"dataBean":{"batch_no":"N20150204","data_type":"000001","k_sign":"75CC479AAC09F00BA28F0E968B1BC9D1B90ADCC2","msg_sign":"未知","rd_num":"6631383","rd_time":"20150204","user_name":"xx","version":"v1.0"},"regBeans":[{"reg_no":"33","reg_sn":"REG20150204","reg_way":"pc","remarks":"无备注","ret_url":"未知","set_time":"20150204 16:18","user_id":12},{"reg_no":"33","reg_sn":"REG20150204","reg_way":"pc","remarks":"无备注","ret_url":"未知","set_time":"20150204 16:18","user_id":12}]}

代码中间注意点:
  M
arshaller.JAXB_FORMATTED_OUTPUT :决定是否在转换成xml时同时进行格式化(即按标签自动换行,否则即是一行的xml) 

  Marshaller.JAXB_ENCODING :xml的编码方式。

  Marshaller.JAXB_FRAGMENT :是否省略xml头信息

  marshal.setProperty(“jaxb.encoding”, “utf-8″); : 设置编码格式 utf-8

[CXF REST标准实战系列] 一、JAXB xml与javaBean的转换

标签:

原文地址:http://my.oschina.net/jeffli1993/blog/376846

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!