Spring MVC框架checkboxes标签的三种使用方式

我就是我 2022-10-01 00:39 195阅读 0赞

代码：

checkboxesForm.jsp

**\[html\]** [view plain][] [copy][view plain]

1.  **<**%@ page language="java"contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%**>**
2.  **<**%@ taglib prefix="form"uri="http://www.springframework.org/tags/form" %**>**
3.  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"**>**
4.  **<****html****>**
5.  **<****head****>**
6.  **<****meta**http-equiv="Content-Type"content="text/html; charset=UTF-8"**>**
7.  **<****title****>**测试checkboxes标签**</****title****>**
8.  **</****head****>**
9.  **<****body****>**
10. **<****h3****>**form:checkboxes测试**</****h3****>**
11. **<****form:form**modelAttribute="user"method="post"action="checkboxesForm"**>**
12. **<****table****>**
13. **<****tr****>**
14. **<****td****>**选择课程：**</****td****>**
15. **<****td****>**
16. **<****form:checkboxes**items="$\{courseList\}"path="courses"**/>**
17. **</****td****>**
18. **</****tr****>**
19. **</****table****>**
20. **</****form:form****>**
21. **</****body****>**
22. **</****html****>**

checkboxesForm2.jsp

**\[html\]** [view plain][] [copy][view plain]

1.  **<**%@ page language="java"contentType="text/html; charset=UTF-8"
2.  pageEncoding="UTF-8"%**>**
3.  **<**%@ taglib prefix="form"uri="http://www.springframework.org/tags/form" %**>**
4.  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"**>**
5.  **<****html****>**
6.  **<****head****>**
7.  **<****meta**http-equiv="Content-Type"content="text/html; charset=UTF-8"**>**
8.  **<****title****>**测试checkboxes标签**</****title****>**
9.  **</****head****>**
10. **<****body****>**
11. **<****h3****>**form:checkboxes测试**</****h3****>**
12. **<****form:form**modelAttribute="user"method="post"action="checkboxesForm2"**>**
13. **<****table****>**
14. **<****tr****>**
15. **<****td****>**选择课程:**</****td****>**
16. **<****td****>**
17. **<****form:checkboxes**items="$\{courseMap\}"path="courses"**/>**
18. **</****td****>**
19. **</****tr****>**
20. **</****table****>**
21. **</****form:form****>**
22. **</****body****>**
23. **</****html****>**

checkboxesForm3.jsp

**\[html\]** [view plain][] [copy][view plain]

1.  **<**%@ page language="java"contentType="text/html; charset=UTF-8"
2.  pageEncoding="UTF-8"%**>**
3.  **<**%@ taglib prefix="form"uri="http://www.springframework.org/tags/form" %**>**
4.  <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"**>**
5.  **<****html****>**
6.  **<****head****>**
7.  **<****meta**http-equiv="Content-Type"content="text/html; charset=UTF-8"**>**
8.  **<****title****>**测试checkboxes标签**</****title****>**
9.  **</****head****>**
10. **<****body****>**
11. **<****h3****>**form:checkboxes测试**</****h3****>**
12. **<****form:form**modelAttribute="employee"method="post"action="checkboxesForm3"**>**
13. **<****table****>**
14. **<****tr****>**
15. **<****td****>**选择部门:**</****td****>**
16. **<****td****>**
17. **<****form:checkboxes**items="$\{deptList\}"path="depts"
18. itemLabel="name"itemValue="id"**/>**
19. **</****td****>**
20. **</****tr****>**
21. **</****table****>**
22. **</****form:form****>**
23. **</****body****>**
24. **</****html****>**

User.java

**\[java\]** [view plain][] [copy][view plain]

1.  **package** com.bean; 
2.  
3.  **import** java.io.Serializable; 
4.  **import** java.util.List; 
5.  
6.  **public****class** User **implements** Serializable \{ 
7.  **private** List<String> courses; 
8.  
9.  **public** User() \{ 
10. **super**(); 
11. // TODO Auto-generated constructor stub
12.  \} 
13. 
14. **public** List<String> getCourses() \{ 
15. **return** courses; 
16.  \} 
17. 
18. **public****void** setCourses(List<String> courses) \{ 
19. **this**.courses = courses; 
20.  \} 
21. 
22. \}

Dept.java

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1.  **package** com.bean; 
2.  
3.  **public****class** Dept \{ 
4.  **private** Integer id; 
5.  **private** String name; 
6.  **public** Dept() \{ 
7.  **super**(); 
8.  // TODO Auto-generated constructor stub
9.   \} 
10. **public** Dept(Integer id, String name) \{ 
11. **super**(); 
12. **this**.id = id; 
13. **this**.name = name; 
14.  \} 
15. **public** Integer getId() \{ 
16. **return** id; 
17.  \} 
18. **public****void** setId(Integer id) \{ 
19. **this**.id = id; 
20.  \} 
21. **public** String getName() \{ 
22. **return** name; 
23.  \} 
24. **public****void** setName(String name) \{ 
25. **this**.name = name; 
26.  \} 
27. 
28. \}

Employee.java

**\[java\]** [view plain][] [copy][view plain]

1.  **package** com.bean; 
2.  
3.  **import** java.util.List; 
4.  
5.  **public****class** Employee \{ 
6.  **private** List<Dept> depts; 
7.  
8.  **public** List<Dept> getDepts() \{ 
9.  **return** depts; 
10.  \} 
11. 
12. **public****void** setDepts(List<Dept> depts) \{ 
13. **this**.depts = depts; 
14.  \} 
15. 
16. \}

UserController.java

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1.  **package** com.control; 
2.  
3.  **import** java.util.ArrayList; 
4.  **import** java.util.HashMap; 
5.  **import** java.util.List; 
6.  **import** java.util.Map; 
7.  
8.  **import** org.springframework.stereotype.Controller; 
9.  **import** org.springframework.ui.Model; 
10. **import** org.springframework.web.bind.annotation.RequestMapping; 
11. **import** org.springframework.web.bind.annotation.RequestMethod; 
12. 
13. **import** com.bean.Dept; 
14. **import** com.bean.Employee; 
15. **import** com.bean.User; 
16. 
17. @Controller
18. **public****class** UserController \{ 
19. /\*
20.  \* 第一种方式
21.  \*/
22. @RequestMapping(value="/checkboxesForm",method=RequestMethod.GET) 
23. **public** String registerForm(Model model)\{ 
24.  User user=**new** User(); 
25. // 为集合变量courses添加“JAVAEE”和“Spring”，页面的checkbox复选框这两项会被选中
26.  List<String> list = **new** ArrayList<String>(); 
27.  list.add("JAVAEE"); 
28.  list.add("Spring"); 
29.  user.setCourses(list); 
30. // 页面展现的可供选择的复选框内容courseList
31.  List<String> courseList = **new** ArrayList<String>(); 
32.  courseList.add("JAVAEE"); 
33.  courseList.add("Mybatis"); 
34.  courseList.add("Spring"); 
35. // model中添加属性user和courseList
36.  model.addAttribute("user",user); 
37.  model.addAttribute("courseList",courseList); 
38. **return**"checkboxesForm"; 
39.  \} 
40. 
41. /\*
42.  \* 第二种方式
43.  \*/
44. @RequestMapping(value="/checkboxesForm2",method=RequestMethod.GET) 
45. **public** String registerForm2(Model model)\{ 
46.  User user=**new** User(); 
47. // 为集合变量courses添加“JAVAEE”和“Spring”，页面的checkbox复选框这两项会被选中
48.  List<String> list = **new** ArrayList<String>(); 
49.  list.add("1"); 
50.  list.add("3"); 
51.  user.setCourses(list); 
52. // 页面展现的可供选择的复选框内容courseList
53.  Map<String, String> courseMap = **new** HashMap<String, String>(); 
54.  courseMap.put("1","JAVAEE"); 
55.  courseMap.put("2","Mybatis"); 
56.  courseMap.put("3","Spring"); 
57. // model中添加属性user和courseList
58.  model.addAttribute("user",user); 
59.  model.addAttribute("courseMap",courseMap); 
60. **return**"checkboxesForm2"; 
61.  \} 
62. 
63. /\*
64.  \* 第三种方式
65.  \*/
66. @RequestMapping(value="/checkboxesForm3",method=RequestMethod.GET) 
67. **public** String registerForm3(Model model) \{ 
68.  Employee employee = **new** Employee(); 
69.  Dept dept = **new** Dept(1,"开发部"); 
70. // 为集合变量depts添加Dept对象，该对象id=1，name=开发吧，页面的checkbox复选框这一项会被选中
71.  List<Dept> list = **new** ArrayList<Dept>(); 
72.  list.add(dept); 
73.  employee.setDepts(list); 
74. // 页面展现的可供选择的复选框内容deptList
75.  List<Dept> deptList = **new** ArrayList<Dept>(); 
76.  deptList.add(dept); 
77.  deptList.add(**new** Dept(2,"销售部")); 
78.  deptList.add(**new** Dept(3,"财务部")); 
79. // model中添加属性employee和deptList
80.  model.addAttribute("employee",employee); 
81.  model.addAttribute("deptList",deptList); 
82. **return**"checkboxesForm3"; 
83.  \} 
84. \}

截图：

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![Center 1][]

![Center 2][]

[view plain]: http://blog.csdn.net/haige_lin/article/details/65441803#
[Center]: /images/20220705/ae179dc11a1640dc91ef972c0a591f03.png
[Center 1]: /images/20220705/3f707d0618d6463da2d5caccfb2a1202.png
[Center 2]: /images/20220705/9479dd044d3743d6a8ac9b46dfeb2316.png