当我们需要测试保存时，自己new对象很麻烦，所以我写了一个通用方法，来自动设置初始值
现在还只能设置String类型，之后再增加设置其他类型。直接上代码。
package com.setValueToObject; import com.alibaba.fastjson.JSON; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import javax.transaction.NotSupportedException; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; /** * TODO * * @author sean * @date 2020/5/13 11:51 AM */ public class ObjectParamOprate<T> { private final static Logger logger = LoggerFactory.getLogger(ObjectParamOprate.class); /** * 只给T对象中的String类型的属性赋值 * @param t * @return * @throws InvocationTargetException * @throws IllegalAccessException * @throws NotSupportedException */ public T setStringVaule(T t) throws InvocationTargetException, IllegalAccessException { Field[] f = t.getClass().getDeclaredFields();; //给test对象赋值 for (int i = 0; i < f.length; i++) { //获取属相名 String attributeName = f[i].getName(); //将属性名的首字母变为大写，为执行set/get方法做准备 String methodName = attributeName.substring(0, 1).toUpperCase() + attributeName.substring(1); try { //获取Test类当前属性的setXXX方法（私有和公有方法） /*Method setMethod=Test.class.getDeclaredMethod("set"+methodName);*/ //获取Test类当前属性的setXXX方法（只能获取公有方法） Method setMethod = t.getClass().getMethod("set" + methodName, String.class); //执行该set方法 setMethod.invoke(t, attributeName); } catch (NoSuchMethodException e) { logger.warn("不能给[{}]赋值，请自己赋值", attributeName); } } return t; } public static void main(String[] args) throws InvocationTargetException, IllegalAccessException, NotSupportedException { Test test = new Test(); ObjectParamOprate<Test> t = new ObjectParamOprate<>(); t.setStringVaule(test); System.out.println(JSON.toJSONString(test)); } }
package com.setValueToObject;
import java.math.BigDecimal;
public class Test {
private String aa;
private int bb;
private String cc;
public String dd;
public Test test;
public BigDecimal ee;
private String ff;
public String getFf() {
return ff;
}
public void setFf(String ff) {
this.ff = ff;
}
public String getAa() {
return aa;
}
public void setAa(String aa) {
this.aa = aa;
}
public int getBb() {
return bb;
}
public void setBb(int bb) {
this.bb = bb;
}
public String getCc() {
return cc;
}
public void setCc(String cc) {
this.cc = cc;
}
public Test getTest() {
return test;
}
public void setTest(Test test) {
this.test = test;
}
public BigDecimal getEe() {
return ee;
}
public void setEe(BigDecimal ee) {
this.ee = ee;
}
}
原文：https://www.cnblogs.com/sean-zeng/p/12881962.html