利用commons-beanutil自写一个java工具类:
public class MapToBeanUtil {
/*
* 传入一个map和一个类型,通过类型创建变量，把map中的数据封装到javabean对象中，然后返回对象
*/
public static <T> T toBean(Map map,Class<T>clazz ) {
try {
T bean = clazz.newInstance();
BeanUtils.populate(bean, map);
return bean;
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
再准备一个javabean：
public class User {
private String name;
private String password;
private String sex;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
@Override
public String toString() {
return "Student [name=" + name + ", password=" + password + ", sex=" + sex
+ "]";
}
}
jsp:
<body> <form action="<%=request.getContextPath() %>/RegistServlet" method="post"> 名称:<input type="text" name="name" /><br/> 密码:<input type="text" name="password" /><br/> 性别:<input type="text" name="sex" /><br/> <input type="submit" value="提交"/> </form> </body>
servlet:
public class RegistServlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { //输出bean的返回对象
System.out.println(MapToBeanUtil.toBean(request.getParameterMap(), User.class));
}
}
时间： 2024-10-07 18:21:27