Jsp/Servlet automatically fills Java objects according to request parameters: Form Bean

Jsp/Servlet automatically fills Java objects according to request parameters: Form Bean

(1) Question:

For simplicity and convenience, we need a technology that can submit all form data at a time, that is, Bean form.

(2) The BeanUtilities code is as follows:

package com.lc.ch04Biaodanshuju;import java.util.*;import javax.servlet.http.*;import org.apache.commons.beanutils.BeanUtils;public class BeanUtilities {    public static void populateBean(Object formBean,                                  HttpServletRequest request) {    populateBean(formBean, request.getParameterMap());  }    public static void populateBean(Object bean,                                  Map propertyMap) {    try {      BeanUtils.populate(bean, propertyMap);    } catch(Exception e) {      // Empty catch. The two possible exceptions are      // java.lang.IllegalAccessException and      // java.lang.reflect.InvocationTargetException.      // In both cases, just skip the bean operation.    }  }}

(3) Use a servlet that collects Insurance Employee insurance information to determine feasible insurance plans and related fees.

package com.lc.ch04Biaodanshuju;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class SubmitInsuranceInfo extends HttpServlet {  public void doGet(HttpServletRequest request,                    HttpServletResponse response)      throws ServletException, IOException {    InsuranceInfo info = new InsuranceInfo();    BeanUtilities.populateBean(info, request);    response.setContentType("text/html");    PrintWriter out = response.getWriter();    String docType =      "\n";    String title = "Insurance Info for " + info.getName();    out.println(docType +                "\n" +                "" + title + "\n" +                "\n" +                "
 
  \n" +                "" + title + "\n" +                "
  
 

  
   \n" +                "  
   
  
Employee ID: " + info.getEmployeeID() + "\n" + " 
   
  
Number of children: " + info.getNumChildren() + "\n" + " 
   
  
Married?: " + info.isMarried() + "\n" + "
  
 
 ");  }}

(4) connect to the database's javabean

package com.lc.ch04Biaodanshuju;public class InsuranceInfo {  private String name = "No name specified";  private String employeeID = "No ID specified";  private int numChildren = 0;  private boolean isMarried = false;  public String getName() {    return(name);  }   public void setName(String name) {    this.name = ServletUtilities.filter(name);  }  public String getEmployeeID() {    return(employeeID);  }    public void setEmployeeID(String employeeID) {    this.employeeID = ServletUtilities.filter(employeeID);  }  public int getNumChildren() {    return(numChildren);  }  public void setNumChildren(int numChildren) {    this.numChildren = numChildren;  }    public boolean isMarried() {    return(isMarried);  }  public void setMarried(boolean isMarried) {    this.isMarried = isMarried;  }}

(5)

Employee Insurance Signup
 
  Employee Insurance Signup
 

(6) jar package acquisition and use: we want to use tools must learn jar package,: http://download.csdn.net/detail/u010870518/7867181 do not forget to add configuration!