struts２.０学习笔记（五）－

项目树形图

WebRoot/WEB-INF/web.xml

1 <? xml version="1.0" encoding="UTF-8" ?>
2 < web-app id ="WebApp_ID" version ="2.4"
3     xmlns ="http://java.sun.com/xml/ns/j2ee"
4     xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance"
5     xsi:schemaLocation ="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >
6      < display-name > Struts2Hello </ display-name >
7      < filter >
8          < filter-name > struts2 </ filter-name >
9          < filter-class >
10             org.apache.struts2.dispatcher.FilterDispatcher
11          </ filter-class > 
12      </ filter >
13      < filter-mapping >
14          < filter-name > struts2 </ filter-name >
15          < url-pattern > /* </ url-pattern > 
16      </ filter-mapping >
17      < welcome-file-list >
18          < welcome-file > index.html </ welcome-file >
19          < welcome-file > index.htm </ welcome-file >
20          < welcome-file > index.jsp </ welcome-file >
21          < welcome-file > default.html </ welcome-file >
22          < welcome-file > default.htm </ welcome-file >
23          < welcome-file > default.jsp </ welcome-file >
24      </ welcome-file-list >
25 </ web-app >
26

WebRoot/index.jsp

1 <%

@page contentType="text/html; charset=GBK" %>
2 <%

@taglib prefix="s" uri="/struts-tags" %>
3 <! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" >
4 < html >
5      < head >
6          < title > Converter </ title >
7      </ head >
8
9      < body >
10          < s:form action ="HelloWorld" theme ="simple" >
11              <%

12                // name="loc" 是LoginAction.java中的private Locale loc = Locale.CHINA;
13             %>
14     Locale: < s:textfield name ="loc" />
15              < br >
16              < s:submit />
17          </ s:form >
18          < br >
19          < h2 >
20              < s:property value ="msg" />
21          </ h2 >
22      </ body >
23 </ html >
24

WebRoot/submit.jsp

1 <%

@page contentType="text/html; charset=GBK" %>
2 <%

@taglib prefix="s" uri="/struts-tags" %>
3
4 < html >
5      < head >
6          < title > submit </ title >
7      </ head >
8      
9      < body >
10          
11          < div style ="color: red" >
12              < s:fielderror ></ s:fielderror >
13          </ div >
14          < s:form action ="ProductConfirm" theme ="simple" >
15              < table >
16                  < tr style ="background-color: powderblue; font-weight: bold;" >
17                      < td >
18                         Product Name
19                      </ td >
20                      < td >
21                         Price
22                      </ td >
23                      < td >
24                         Date of Production
25                      </ td >
26                  </ tr >
27                  <%

28                    //1．s:iterator：使用迭代器
29                        //2．value=＂new int[3]＂ status="stat"：整形数组集合对应action中的List集合;每次取出一个值存入stat中
30                        //3． products［'+＃stat.index+'］.name：OGNL表达式,相当于＜%= "products[" + stat.index + "].name" %＞
31                        //        (1)products对应action(ProductConfirm．java)中的 products属性,
32                        //        (2)整个句子的作用是从action中找到products并取出products的name属性
33                        //        (3)规范表达式:%{Action 中的属性集合[整数数组的迭代取值].具体pojo类的属性}
34                 %>
35
36                  < s:iterator value ="new int[3]" status ="stat" >
37                      < tr >
38                          < td >
39                              < s:textfield name ="%{'products['+#stat.index+'].pname'}" />
40                          </ td >
41                          < td >
42                              < s:textfield name ="%{'products['+#stat.index+'].price'}" />
43                          </ td >
44                          < td >
45                              < s:textfield name ="%{'products['+#stat.index+'].pdate'}" />
46                          </ td >
47                      </ tr >
48                  </ s:iterator >
49                  < tr >
50                      < td colspan ="3" >
51                          < s:submit />
52                      </ td >
53                  </ tr >
54              </ table >
55          </ s:form >
56      </ body >
57 </ html >
58

WebRoot/show.jsp

1 <%

@ page contentType="text/html; charset=GBK" %>
2 <%

@taglib prefix="s" uri="/struts-tags" %>
3 < html >
4      < head >
5          < title > show </ title >
6      </ head >
7      
8      < body >
9          < table >
10              < tr style ="background-color: powderblue; font-weight: bold;" >
11                  < td >
12                     Product Name
13                  </ td >
14                  < td >
15                     Price
16                  </ td >
17                  < td >
18                     Date of Production
19                  </ td >
20              </ tr >
21              
22              < s:iterator value ="products" status ="stat" >
23                  < tr >
24                      < td >
25                          < s:property value ="pname" />
26                      </ td >
27                      < td >
28                         $
29                          < s:property value ="price" />
30                      </ td >
31                      < td >
32                          < s:property value ="pdate" />
33                      </ td >
34                  </ tr >
35              </ s:iterator >
36          </ table >
37      </ body >
38 </ html >
39

src/com.action.LocaleConverter.java

1 package com.action;
2
3 import java.lang.reflect.Member;
4 import java.util.Locale;
5 import java.util.Map;
6
7 /** */ /**
8 * @author ∪∩BUG E-mail: [email protected]
9 * @version Aug 24, 2008 4:29:04 PM
10 * @转换器类
11 */
12
13 // 继承ognl默认的格式转换类
14 public class LocaleConverter extends ognl.DefaultTypeConverter

{
15
16    @Override
17    // Map context:上下上下文对象; Object value:待转换对象; Class toType:目标类型
18    public Object convertValue(Map context, Object value, Class toType)

{
19
20 // 如果要转换的是本地化类型Locale.class(如整形:Integer.class)
21 if (toType == Locale.class)

{
22
23            // 把待转换类型强制转换成字符串类型,并取第一个元素
24            String locale = ((String[]) value)[0];
25
26            // 截取字符串去掉"_";如果zh_CN截取得(zh,CN)
27            return new Locale(locale.substring(0, 2), locale.substring(3));
28        }
29        // 转换成字符串类型
30        else if (toType == String.class)

{
31
32            Locale locale = (Locale) value;
33            return locale.toString();
34        }
35
36        return null;
37    }
38}

src/com.action.LoginAction.java

1 package com.action;
2
3 import java.util.Locale;
4
5 import com.opensymphony.xwork2.ActionSupport;
6 import com.opensymphony.xwork2.util.LocalizedTextUtil;
7
8 /** */ /**
9 * @author ∪∩BUG E-mail: [email protected]
10 * @version Aug 24, 2008 4:11:04 PM
11 * @Action 类
12 */
13 @SuppressWarnings( " serial " )
14 public class LoginAction extends ActionSupport

{
15
16    private String msg;
17    private Locale loc = Locale.CHINA;    //默认语言版本的中文
18
19    public LoginAction()

{
20        super();
21        // TODO Auto-generated constructor stub
22    }
23
24    public LoginAction(String msg, Locale loc)

{
25        super();
26        this.msg = msg;
27        this.loc = loc;
28    }
29
30    @Override
31    public String execute() throws Exception

{
32
33        //LocalizedTextUtil是struts2.0中的国际化初始化工具,
34        //获取当前资源文件中的名为HelloWorld的key,然后使用loc语言版本
35        msg = LocalizedTextUtil.findDefaultText("HelloWorld", loc);
36        return SUCCESS;
37    }
38
39    public String getMsg()

{
40        return msg;
41    }
42
43    public void setMsg(String msg)

{
44        this.msg = msg;
45    }
46
47    public Locale getLoc()

{
48        return loc;
49    }
50
51    public void setLoc(Locale loc)

{
52 this.loc = loc;
53 }
54}
55

src/com.action.ProductConfirm.java

1 package com.action;
2
3 import java.util.List;
4
5 import com.opensymphony.xwork2.ActionSupport;
6 import com.pojo.Product;
7
8 /** */ /**
9 * @author ∪∩BUG E-mail: [email protected]
10 * @version Aug 24, 2008 9:58:06 PM
11 * @Action类测试页面的提交功能
12 */
13 @SuppressWarnings( " serial " )
14 public class ProductConfirm extends ActionSupport

{
15
16    // 标准list集合
17    private List<Product> products;
18
19    public List<Product> getProducts()

{
20        return products;
21    }
22
23    public void setProducts(List<Product> products)

{
24        this.products = products;
25    }
26
27    @Override
28    public String execute() throws Exception

{
29 //遍历products列表
30 for (Product p : products)

{
31            System.out.println(p.getPname() + "|" + p.getPrice() + "|"
32                    + p.getPdate());
33        }
34        return SUCCESS;
35    }
36}
37

src/com.pojo.Product.java

1 package com.pojo;
2
3
4 import java.io.Serializable;
5 import java.util.Date;
6
7 /** */ /**
8 * @author ∪∩BUG E-mail: [email protected]
9 * @version Aug 24, 2008 9:51:03 PM
10 * @自定义数据类型
11 */
12 @SuppressWarnings( " serial " )
13 public class Product implements Serializable

{
14
15    //String,double,Date数据类型系统都内置有他们的转换器,无需另写转换器
16    private String pname;
17    private double price;
18    private Date pdate;
19
20    public Product()

{
21
22 }
23
24 public String getPname()

{
25        return pname;
26    }
27
28    public void setPname(String pname)

{
29        this.pname = pname;
30    }
31
32    public double getPrice()

{
33        return price;
34    }
35
36    public void setPrice(double price)

{
37        this.price = price;
38    }
39
40    public Date getPdate()

{
41        return pdate;
42    }
43
44    public void setPdate(Date pdate)

{
45        this.pdate = pdate;
46    }
47
48    public Product(String pname, double price, Date pdate)

{
49        super();
50        this.pname = pname;
51        this.price = price;
52        this.pdate = pdate;
53    }
54
55}
56

src/com.action.ProductConfirm-conversion.properties
ProductConfirm-conversion.properties //固定格式Action名-conversion.properties
Element_products=com.pojo.Product //表明products的转换类型是Product,固定格式添加:Element_集合属性名=集合对象的实现类

Element_products = com.pojo.Product

src/xwork-conversion.properties
xwork-conversion.properties //全局转换配置文件,必须放在SRC目录下,文件名固定!
java.util.Locale = com.action.LocaleConverter //自动调用com.action.LocaleConverter来转换

java.util.Locale = com.action.LocaleConverter

src/struts.properties

struts.custom.i18n.resources = globalMessages

src/globalMessages_en_US.properties

HelloWorld = HelloWorld
failtip =

{0} Login failed\ !
language = Select language
smg = Now is

{0}
succtip =

{0} Welcome,Login success.
usen = Americal English
zhcn = Simplified Chinese

src/globalMessages_zh_CN.properties

HelloWorld = \u4F60\u597D
failtip =

{0} \u767B\u5F55\u5931\u8D25
language = \u9009\u62E9\u8BED\u8A00
smg =

{0} \u73B0\u5728\u7684\u4E8B\u4EF6\u662F

{1}
succtip =

{0} \u6B22\u8FCE,\u767B\u5F55\u6210\u529F
usen = \u82F1\u8BED
zhcn = \u4E2D\u6587

src/struts.xml

1 <? xml version="1.0" encoding="GBK" ?>
2 <! DOCTYPE struts PUBLIC
3          "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
4          "http://struts.apache.org/dtds/struts-2.0.dtd" >
5 < struts >
6      < include file ="struts-default.xml" /> 
7
8      
9      < package name ="ConverterDemo" extends ="struts-default" >
10
11          
12          < action name ="HelloWorld" class ="com.action.LoginAction" >
13              < result > /index.jsp </ result >
14          </ action >
15          
20          < action name ="ProductConfirm"
21             class ="com.action.ProductConfirm" >
22              < result > /show.jsp </ result >
23              < result name ="input" > /submit.jsp </ result >
24          </ action >
25      </ package >
26 </ struts >
27
28

struts２.０学习笔记（五）－－Converter(转换器)

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