javabean实体类对象转为Map类型对象的方法

//将javabean实体类转为map类型，然后返回一个map类型的值
public static Map<String, Object> beanToMap(Object obj) {
Map<String, Object> params = new HashMap<String, Object>(0);
try {
PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();
PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(obj);
for (int i = 0; i < descriptors.length; i++) {
String name = descriptors[i].getName();
if (!"class".equals(name)) {
params.put(name, propertyUtilsBean.getNestedProperty(obj, name));
}
}
} catch (Exception e) {
e.printStackTrace();
}
return params;
}

放入上面方法的类需要 import java.beans.PropertyDescriptor;

需要引用两个jar包：commons-beanutils-1.9.2.jar commons-logging-1.2.jar

获取上面两个jar的网址分别是：http://commons.apache.org/beanutils/ http://commons.apache.org/proper/commons-logging/

注意：

如果只引用了commons-beanutils-1.9.2.jar 未引用 commons-beanutils-1.9.2.jar，控制台会报以下错误：

Exception in thread "main" java.lang.NoClassDefFoundError:org/apache/commons/logging/LogFactory

at org.apache.commons.beanutils.ConvertUtilsBean.<init>(ConvertUtilsBean.java:157)

at org.apache.commons.beanutils.BeanUtilsBean.<init>(BeanUtilsBean.java:117)

at org.apache.commons.beanutils.BeanUtilsBean$1.initialValue(BeanUtilsBean.java:68)

at org.apache.commons.beanutils.ContextClassLoaderLocal.get(ContextClassLoaderLocal.java:153)

at org.apache.commons.beanutils.BeanUtilsBean.getInstance(BeanUtilsBean.java:80)

at org.apache.commons.beanutils.BeanUtils.getProperty(BeanUtils.java:382)

at fighting.IntroSpectorDemo.main(IntroSpectorDemo.java:31)