来源 ： https://www.cnblogs.com/frinder6/p/7204574.html
部分参考：http://www.cnblogs.com/zy2009/p/6725843.html
pom.xml中添加：
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<dependency> <groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.9.3</version>
</dependency><dependency> <groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>3.2.4</version>
</dependency> |
使用cglib动态生成类与使用 commons-beanutils获取源对象属性-类型集合，封装成新对象并设置值代码：
package com.frinder.util;
import com.google.common.collect.Maps;
import com.kiktech.entity.LoggerEntity;
import net.sf.cglib.beans.BeanGenerator;
import net.sf.cglib.beans.BeanMap;
import org.apache.commons.beanutils.PropertyUtilsBean;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.beans.PropertyDescriptor;
import java.util.HashMap;
import java.util.Map;
/** * Created by frinder on 2017/7/18.
*/
public class ReflectUtil {
staticLogger logger = LoggerFactory.getLogger(ReflectUtil.class);
publicstatic Object getTarget(Object dest, Map<String, Object> addProperties) {
// get property map
PropertyUtilsBean propertyUtilsBean =new PropertyUtilsBean();
PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(dest);
Map<String, Class> propertyMap = Maps.newHashMap();
for(PropertyDescriptor d : descriptors) {
if(!"class".equalsIgnoreCase(d.getName())) {
propertyMap.put(d.getName(), d.getPropertyType());
}
}
// add extra properties
addProperties.forEach((k, v) -> propertyMap.put(k, v.getClass()));
// new dynamic bean
DynamicBean dynamicBean =new DynamicBean(dest.getClass(), propertyMap);
// add old value
propertyMap.forEach((k, v) -> {
try{
// filter extra properties
if(!addProperties.containsKey(k)) {
dynamicBean.setValue(k, propertyUtilsBean.getNestedProperty(dest, k));
}
}catch (Exception e) {
logger.error(e.getMessage(), e);
}
});
// add extra value
addProperties.forEach((k, v) -> {
try{
dynamicBean.setValue(k, v);
}catch (Exception e) {
logger.error(e.getMessage(), e);
}
});
Object target = dynamicBean.getTarget();
returntarget;
}
publicstatic void main(String[] args) {
LoggerEntity entity =new LoggerEntity();
entity.setAppName("appname");
entity.setOperator("add");
entity.setResult("result");
entity.setUri("uri");
entity.setMethod("method");
Map<String, Object> addProperties =new HashMap() {{
put("hello","world");
put("abc","123");
}};
System.out.println(getTarget(entity, addProperties));
}
publicstatic class DynamicBean {
/**
* 目标对象
*/
privateObject target;
/**
* 属性集合
*/
privateBeanMap beanMap;
publicDynamicBean(Class superclass, Map<String, Class> propertyMap) {
this.target = generateBean(superclass, propertyMap);
this.beanMap = BeanMap.create(this.target);
}
/**
* bean 添加属性和值
*
* @param property
* @param value
*/
publicvoid setValue(String property, Object value) {
beanMap.put(property, value);
}
/**
* 获取属性值
*
* @param property
* @return
*/
publicObject getValue(String property) {
returnbeanMap.get(property);
}
/**
* 获取对象
*
* @return
*/
publicObject getTarget() {
returnthis.target;
}
/**
* 根据属性生成对象
*
* @param superclass
* @param propertyMap
* @return
*/
privateObject generateBean(Class superclass, Map<String, Class> propertyMap) {
BeanGenerator generator =new BeanGenerator();
if(null != superclass) {
generator.setSuperclass(superclass);
}
BeanGenerator.addProperties(generator, propertyMap);
returngenerator.create();
}
}
} |
LoggerEntity代码：
package com.frinder.entity;
import net.logstash.logback.encoder.org.apache.commons.lang.builder.ReflectionToStringBuilder;
/** * Created by frinder on 2017/5/24.
*/
public class LoggerEntity {
privateString method;
privateString uri;
privateObject[] args;
privateObject result;
privateString operator;
privateString appName;
/**
* 获取当前对象
*
* @param method
* @param uri
* @param args
* @param result
* @return
*/
publicLoggerEntity get(String method, String uri, Object[] args, Object result, String operator, String appName) {
setMethod(method);
setUri(uri);
setArgs(args);
setResult(result);
setOperator(operator);
setAppName(appName);
returnthis;
}
publicString getMethod() {
returnmethod;
}
publicvoid setMethod(String method) {
this.method = method;
}
publicString getUri() {
returnuri;
}
publicvoid setUri(String uri) {
this.uri = uri;
}
publicObject[] getArgs() {
returnargs;
}
publicvoid setArgs(Object[] args) {
this.args = args;
}
publicObject getResult() {
returnresult;
}
publicvoid setResult(Object result) {
this.result = result;
}
publicString getOperator() {
returnoperator;
}
publicvoid setOperator(String operator) {
this.operator = operator;
}
publicString getAppName() {
returnappName;
}
publicvoid setAppName(String appName) {
this.appName = appName;
}
@Override
publicString toString() {
returnReflectionToStringBuilder.toString(this);
}
} |
测试结果，需要在调试模式下才能看到：