baseAction<T>一例

最新推荐文章于 2019-07-10 22:57:36 发布

kite30

最新推荐文章于 2019-07-10 22:57:36 发布

阅读量623

点赞数

分类专栏： java 文章标签： ssh

java 专栏收录该内容

69 篇文章

订阅专栏

本文介绍了一个用于Struts2框架的通用Action基类的设计实现，该基类通过泛型支持多种业务模型，并利用反射机制动态创建实例。此外，还包括了与应用上下文、会话及请求相关的属性设置。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

package com.ssh.demo.action;

02
 
03
import java.io.InputStream;

04
import java.lang.reflect.ParameterizedType;

05
import java.util.List;

06
import java.util.Map;

07
 
08
import javax.annotation.Resource;

09
 
10
import org.apache.struts2.interceptor.ApplicationAware;

11
import org.apache.struts2.interceptor.RequestAware;

12
import org.apache.struts2.interceptor.SessionAware;

13
 
14
import com.opensymphony.xwork2.ActionSupport;

15
import com.opensymphony.xwork2.ModelDriven;

16
import com.ssh.demo.service.UserService;

17
 
18
@SuppressWarnings("unchecked")

19
public class BaseAction<T> extends ActionSupport implements RequestAware,

20
        SessionAware,
 ApplicationAware, ModelDriven<T> {

21
 
22
    protected T
 model; //
 model 有可能为 user，student,teacher等等........

23
    protected Map<String,
 Object> jsonMap = null;

24
    protected List<T>
 jsonList = null;

25
    protected InputStream
 inputStream = null;

26
    protected Map<String,
 Object> application;

27
    protected Map<String,
 Object> session;

28
    protected Map<String,
 Object> request;

29
 
30
    @Resource

31
    protected UserService
 userService;

32
    /**

33
     *
 通过反射动态的创建对象

34
     */

35
    public BaseAction()
 {

36
        ParameterizedType
 type = (ParameterizedType) this.getClass()

37
                .getGenericSuperclass();

38
        Class
 clazz = (Class) type.getActualTypeArguments()[0];

39
        try {

40
            model
 = (T) clazz.newInstance();

41
        } catch (Exception
 e) {

42
            throw new RuntimeException(e);

43
        }

44
    }

45
 
46
    @Override

47
    public T
 getModel() {

48
        return model;

49
    }

50
 
51
    public void setJsonMap(Map<String,
 Object> jsonMap) {

52
        this.jsonMap
 = jsonMap;

53
    }

54
 
55
    public Map<String,
 Object> getJsonMap() {

56
        return jsonMap;

57
    }

58
 
59
    public List<T>
 getJsonList() {

60
        return jsonList;

61
    }

62
 
63
    public void setJsonList(List<T>
 jsonList) {

64
        this.jsonList
 = jsonList;

65
    }

66
 
67
    public InputStream
 getInputStream() {

68
        return inputStream;

69
    }

70
 
71
    public void setInputStream(InputStream
 inputStream) {

72
        this.inputStream
 = inputStream;

73
    }

74
 
75
    @Override

76
    public void setApplication(Map<String,
 Object> application) {

77
        this.application
 = application;

78
    }

79
 
80
    @Override

81
    public void setSession(Map<String,
 Object> session) {

82
        this.session
 = session;

83
    }

84
 
85
    @Override

86
    public void setRequest(Map<String,
 Object> request) {

87
        this.request
 = request;

88
    }

89
}