如何把Map转换成Bean? 在Spring和Commons里面找了半天也没看到。谁知道有把Map转换成Bean的函数库?不要JBoss,太重了。 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 CGLib 可以生成动态的 Bean下面的代码可以参考一下或许对你有帮助,以前回复的直接拿出来用了。Map 结构是 key: 属性名,value: 属性的类型,当然了,属性类型全变成 Object 也是可以的。import java.lang.reflect.Field;import java.lang.reflect.Method;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Set;import net.sf.cglib.beans.BeanGenerator;import net.sf.cglib.beans.BeanMap;public class DynaBeanCglibTest { public static void main(String[] args) throws ClassNotFoundException { System.out.println("Generate JavaBean ..."); // 设置类成员属性 Map properties = new HashMap(); properties.put("id", Class.forName("java.lang.Integer")); properties.put("name", Class.forName("java.lang.String")); properties.put("address", Class.forName("java.lang.String")); // 生成动态 Bean CglibDynaBean bean = new CglibDynaBean(properties); System.out.println(" OK!"); System.out.println("Set values ..."); // 给 Bean 设置值 bean.setValue("id", new Integer(123)); bean.setValue("name", "454"); bean.setValue("address", "789"); System.out.println(" OK!"); System.out.println("Get values"); // 从 Bean 中获取值,当然了获得值的类型是 Object System.out.println(" >> id = " + bean.getValue("id")); System.out.println(" >> name = " + bean.getValue("name")); System.out.println(" >> address = " + bean.getValue("address")); System.out.println("Class name"); // 查看动态 Bean 的类名 Class clazz = bean.getObject().getClass(); System.out.println(" >> " + clazz.getName()); System.out.println("Show all methods"); // 查看动态 Bean 中声明的方法 Method[] methods = clazz.getDeclaredMethods(); for(int i = 0; i < methods.length; i++) { System.out.println(" >> " + methods[i].getName()); } System.out.println("Show all properties"); // 查看动态 Bean 中声明的字段 Field[] fields = clazz.getDeclaredFields(); for(int i = 0; i < fields.length; i++) { System.out.println(" >> " + fields[i].getName()); } }}class CglibDynaBean { private Object object = null; private BeanMap beanMap = null; public CglibDynaBean(Map properties) { this.object = generateBean(properties); this.beanMap = getBeanMap(); } public void setValue(String property, Object value) { beanMap.put(property, value); } public Object getValue(String property) { return beanMap.get(property); } public Object getObject() { return this.object; } private Object generateBean(Map properties) { BeanGenerator generator = new BeanGenerator(); Set keySet = properties.keySet(); for(Iterator i = keySet.iterator(); i.hasNext();) { String key = (String)i.next(); generator.addProperty(key, (Class)properties.get(key)); } return generator.create(); } private BeanMap getBeanMap() { return BeanMap.create(this.object); }} 新手求助帮忙找下错误,谢谢拉! 毛一样的java…… 用变量代替类的属性并且调用 有两个小问题,请大家帮下忙~~(其实都不算什么问题) JAVA打印等腰三角形 求教:关于String的indexOf() 续:基本问题!数据导出的异常处理! 急救~~~~~~~~~~~~~~~~求光标顺序控制 “按钮被点击时,text变化,过一会再变回来”中遇到的问题 关于protected的访问问题。 栈与堆栈是不是一样啊,是不是就是同一个意思啊 ?如果java类里的成员变量是自身的对象,则新建该类对象时内存中怎么分配空间,我感觉好像死循环了
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;import net.sf.cglib.beans.BeanGenerator;
import net.sf.cglib.beans.BeanMap;public class DynaBeanCglibTest { public static void main(String[] args) throws ClassNotFoundException {
System.out.println("Generate JavaBean ...");
// 设置类成员属性
Map properties = new HashMap();
properties.put("id", Class.forName("java.lang.Integer"));
properties.put("name", Class.forName("java.lang.String"));
properties.put("address", Class.forName("java.lang.String"));
// 生成动态 Bean
CglibDynaBean bean = new CglibDynaBean(properties);
System.out.println(" OK!");
System.out.println("Set values ...");
// 给 Bean 设置值
bean.setValue("id", new Integer(123));
bean.setValue("name", "454");
bean.setValue("address", "789");
System.out.println(" OK!");
System.out.println("Get values");
// 从 Bean 中获取值,当然了获得值的类型是 Object
System.out.println(" >> id = " + bean.getValue("id"));
System.out.println(" >> name = " + bean.getValue("name"));
System.out.println(" >> address = " + bean.getValue("address")); System.out.println("Class name");
// 查看动态 Bean 的类名
Class clazz = bean.getObject().getClass();
System.out.println(" >> " + clazz.getName());
System.out.println("Show all methods");
// 查看动态 Bean 中声明的方法
Method[] methods = clazz.getDeclaredMethods();
for(int i = 0; i < methods.length; i++) {
System.out.println(" >> " + methods[i].getName());
} System.out.println("Show all properties");
// 查看动态 Bean 中声明的字段
Field[] fields = clazz.getDeclaredFields();
for(int i = 0; i < fields.length; i++) {
System.out.println(" >> " + fields[i].getName());
}
}
}class CglibDynaBean {
private Object object = null;
private BeanMap beanMap = null;
public CglibDynaBean(Map properties) {
this.object = generateBean(properties);
this.beanMap = getBeanMap();
}
public void setValue(String property, Object value) {
beanMap.put(property, value);
}
public Object getValue(String property) {
return beanMap.get(property);
} public Object getObject() {
return this.object;
}
private Object generateBean(Map properties) {
BeanGenerator generator = new BeanGenerator();
Set keySet = properties.keySet();
for(Iterator i = keySet.iterator(); i.hasNext();) {
String key = (String)i.next();
generator.addProperty(key, (Class)properties.get(key));
}
return generator.create();
}
private BeanMap getBeanMap() {
return BeanMap.create(this.object);
}
}