超速违法代码计算

四个步骤：

1.	配置 Servlet ，使其能响应请求。
2.	编写 响应请求的类：ActionServlet.java
3.	编写接口 OverspeedDao.java
4.	编写 MyBatis 的映射文件：overspeedMapper.xml

 

 

 

配置 servlet

web.xml

 1   <servlet>
 2     <description>This is the description of my J2EE componentdescription>
 3     <display-name>This is the display name of my J2EE componentdisplay-name>
 4     <servlet-name>OverspeedServletservlet-name>
 5     <servlet-class>overspeed.ActionServletservlet-class>
 6   servlet>
 7   
 8   <servlet-mapping>
 9     <servlet-name>OverspeedServletservlet-name>
10     <url-pattern>/OverspeedServleturl-pattern>
11   servlet-mapping>

 

 

src\overspeed\ActionServlet.java 

  1 package overspeed;
  2 
  3 import java.io.IOException;
  4 import java.io.PrintWriter;
  5 import java.util.List;
  6 
  7 import javax.servlet.RequestDispatcher;
  8 import javax.servlet.ServletException;
  9 import javax.servlet.http.HttpServlet;
 10 import javax.servlet.http.HttpServletRequest;
 11 import javax.servlet.http.HttpServletResponse;
 12 import javax.servlet.http.HttpSession;
 13 
 14 import net.sf.json.JSONObject;
 15 
 16 import com.sytz.db.TzkkDb;
 17 import com.sytz.util.CZY;
 18 import com.sytz.util.SYS;
 19 
 20 public class ActionServlet extends HttpServlet {
 21     
 22 
 23     static OverspeedDao overspeedDao = new OverspeedDao();
 24     static Bean bean = new Bean();
 25     
 26 
 27     /*
 28      * 违法列表
 29      */
 30     private static List violationNumberList ;
 31     
 32     
 33     
 34     TzkkDb tzkkdb=new TzkkDb();
 35     /**
 36      * Constructor of the object.
 37      */
 38     public ActionServlet() {
 39         super();
 40     }
 41 
 42     /**
 43      * Destruction of the servlet. 

 44      */
 45     public void destroy() {
 46         super.destroy(); // Just puts "destroy" string in log
 47         // Put your code here
 48     }
 49 
 50     /**
 51      * The doGet method of the servlet. 

 52      *
 53      * This method is called when a form has its tag value method equals to get.
 54      * 
 55      * @param request the request send by the client to the server
 56      * @param response the response send by the server to the client
 57      * @throws ServletException if an error occurred
 58      * @throws IOException if an error occurred
 59      */
 60     @SuppressWarnings("unused")
 61     public void doGet(HttpServletRequest request, HttpServletResponse response)
 62             throws ServletException, IOException {
 63         
 64         JSONObject json = new JSONObject();
 65         json.accumulate("Method", "GET");
 66         out.println( json.toString() );
 67         
 68         out.flush();
 69         out.close();
 70     }
 71 
 72     /**
 73      * The doPost method of the servlet. 

 74      *
 75      * This method is called when a form has its tag value method equals to post.
 76      * 
 77      * @param request the request send by the client to the server
 78      * @param response the response send by the server to the client
 79      * @throws ServletException if an error occurred
 80      * @throws IOException if an error occurred
 81      */
 82     public void doPost(HttpServletRequest request, HttpServletResponse response)
 83             throws ServletException, IOException {
 84         
 85 
 86         HttpSession session = request.getSession();
 87 //        String overspeedLevel = request.getParameter("overspeedLevel"); // 超速级别
 88         String overspeedNumber = request.getParameter("overspeedNumber"); // 超速编号
 89 //        String overspeedDescription = request.getParameter("overspeedDescription"); // 超速描述
 90         String vehicleType = request.getParameter("vehicleType"); // 车辆类型 CLLX
 91         
 92         
 93 //        if( overspeedLevel.equals("1") ){
 94 //            overspeedDescription = "20%以下";
 95 //            overspeedNumber = "01";
 96 //        }else if(overspeedLevel.equals("2") ){
 97 //            overspeedDescription = "20%以上50%以下";
 98 //            overspeedNumber = "02";
 99 //        }else if(overspeedLevel.equals("3") ){
100 //            overspeedDescription = "50%以上100%以下";
101 //            overspeedNumber = "03,05"; // 也可能是 “50%以上”
102 //        }else {
103 //            overspeedDescription = "100%以上";
104 //            overspeedNumber = "04,05"; // 也可能是 “50%以上”
105 //        };
106         
107         bean.setOverspeedNumber(overspeedNumber);
108 //        bean.setOverspeedDescription( overspeedDescription );
109         
110         
111         String violationNumber = "" ;
112         
113 //        bean.setOverspeedLevel( overspeedLevel );
114         bean.setVehicleType( vehicleType );
115         
116         // 访问数据库
117         violationNumberList = overspeedDao.selectList( bean );
118         
119         
120         System.out.println( vehicleType );        
121         System.out.println( overspeedNumber );        
122         // 循环列表
123         for( Bean b : violationNumberList ) {
124             violationNumber = b.getViolationNumber();    
125             System.out.println( violationNumber );
126         }
127 
128         response.setContentType("text/html");
129         PrintWriter out = response.getWriter();
130         
131         JSONObject json = new JSONObject();
132 
133         json.accumulate("success", true);
134         json.accumulate("Method", "POST");
135         json.accumulate("vehicleType", vehicleType );
136         json.accumulate("overspeedNumber", overspeedNumber );
137         json.accumulate("violationNumber", violationNumber );
138         out.println( json.toString() );
139         
140         out.flush();
141         out.close();
142         
143     }
144 
145     /**
146      * Initialization of the servlet. 

147      *
148      * @throws ServletException if an error occurs
149      */
150     public void init() throws ServletException {
151         // Put your code here
152     }
153 
154 }

 

 

OverspeedDao.java

 1 package overspeed;
 2 
 3 import java.util.List;
 4 
 5 import org.apache.ibatis.session.SqlSession;
 6 
 7 import system.utils.MyBatisUtils;
 8 
 9 public class OverspeedDao {
10 
11     
12     
13     /*
14      * 读取 1 条记录
15      */
16     @SuppressWarnings("unchecked")
17     public List selectList(Bean bean){   
18 
19         // 开 Session
20         SqlSession session = MyBatisUtils.openSession();
21         List list = null ;
22         
23         try {
24             // 读取 1 条记录
25             list = session.selectList( "overspeedMapper.selectList", bean );
26         } catch ( Exception e) {
27             e.printStackTrace();
28         }finally {
29             // 关闭 session
30             session.close();
31         }
32         
33         return list ;
34         
35     }
36     
37 
38 }

OverspeedDao.java

 

 

overspeedMapper.xml

 1 xml version="1.0" encoding="UTF-8" ?> 
 2     DOCTYPE mapper 
 3         PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" 
 4         "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 5 
 6 <mapper namespace="overspeedMapper">
 7 
 8     
 9             <select id="selectList" parameterType="overspeed.Bean"
10         resultType="overspeed.Bean" useCache="false">        
11         
12     
13     
14         SELECT 
15             T1.WFXWDM as violationNumber
16         FROM BOCOITMS.ITMS_DICT_CLLX t
17             LEFT JOIN BOCOITMS.ITMS_VES_WFCSMAPPING t1 ON t.CLDL = T1.CLDL
18         WHERE t.CLLX = #{vehicleType}
19             AND T1.CSBLDM in ( ${overspeedNumber} )
20             AND ROWNUM = 1
21     ]]>
22         
23     select>    
24     
25     
26 
27 mapper> 

 

转载于:https://www.cnblogs.com/livon/p/3657999.html