Java反射获取对象属性并设值

Java对象：

package com.sjdf.erp.common.utils;import java.math.BigDecimal;public class TypeTest {    private Boolean bigBoolean;    private Long bigLong;    private Double bigDouble;    private Integer bigInt;    private Float bigFloat;    private boolean smallBoolean;    private float smallFloat;    private long smallLong;    private double smallDouble;    private int smallInt;    private BigDecimal decimal;    private String string;        public Long getBigLong() {        return bigLong;    }    public Double getBigDouble() {        return bigDouble;    }    public Integer getBigInt() {        return bigInt;    }    public Float getBigFloat() {        return bigFloat;    }    public float getSmallFloat() {        return smallFloat;    }    public long getSmallLong() {        return smallLong;    }    public double getSmallDouble() {        return smallDouble;    }    public int getSmallInt() {        return smallInt;    }    public BigDecimal getDecimal() {        return decimal;    }    public String getString() {        return string;    }    public void setBigLong(Long bigLong) {        this.bigLong = bigLong;    }    public void setBigDouble(Double bigDouble) {        this.bigDouble = bigDouble;    }    public void setBigInt(Integer bigInt) {        this.bigInt = bigInt;    }    public void setBigFloat(Float bigFloat) {        this.bigFloat = bigFloat;    }    public void setSmallFloat(float smallFloat) {        this.smallFloat = smallFloat;    }    public void setSmallLong(long smallLong) {        this.smallLong = smallLong;    }    public void setSmallDouble(double smallDouble) {        this.smallDouble = smallDouble;    }    public void setSmallInt(int smallInt) {        this.smallInt = smallInt;    }    public void setDecimal(BigDecimal decimal) {        this.decimal = decimal;    }    public void setString(String string) {        this.string = string;    }    public Boolean getBigBoolean() {        return bigBoolean;    }    public boolean isSmallBoolean() {        return smallBoolean;    }    public void setBigBoolean(Boolean bigBoolean) {        this.bigBoolean = bigBoolean;    }    public void setSmallBoolean(boolean smallBoolean) {        this.smallBoolean = smallBoolean;    }    @Override    public String toString() {        return "TypeTest [bigBoolean=" + bigBoolean + ", smallBoolean="                + smallBoolean + ", bigLong=" + bigLong + ", bigDouble="                + bigDouble + ", bigInt=" + bigInt + ", bigFloat=" + bigFloat                + ", smallFloat=" + smallFloat + ", smallLong=" + smallLong                + ", smallDouble=" + smallDouble + ", smallInt=" + smallInt                + ", decimal=" + decimal + ", string=" + string + "]";    }}

反射设值：

package com.sjdf.erp.common.utils;import java.lang.reflect.Field;import java.math.BigDecimal;public class Test {    public static void main(String[] args) throws Exception {        TypeTest test = getBean(TypeTest.class);        System.out.println(test.toString());    }        /**     * 获取单个Bean     * @param c     * @param obj     * @return     * @throws Exception     */    private static <T> T getBean(Class<T> c) throws Exception{        T t = c.newInstance();        Field[] fields = c.getDeclaredFields();        for (int i = 0; i < fields.length; i++) {            Field field = fields[i];            String fieldName = field.getName();            // 获取具体值            field.setAccessible(true);            // 其余情况根据类型赋值            String fieldClassName = field.getType().getSimpleName();            System.out.println(fieldName + " : " + fieldClassName);            if (fieldClassName.equalsIgnoreCase("String")) {                field.set(t, "你好");            } else if (fieldClassName.equalsIgnoreCase("boolean")) {                field.set(t, true);            } else if (fieldClassName.equalsIgnoreCase("int") || fieldClassName.equals("Integer")) {                field.set(t, 10);            } else if (fieldClassName.equalsIgnoreCase("double")) {                field.set(t, 10.2);            } else if (fieldClassName.equalsIgnoreCase("long")) {                field.set(t, 666666699999L);            } else if (fieldClassName.equalsIgnoreCase("BigDecimal")) {                field.set(t, new BigDecimal("1238.502"));            }else if (fieldClassName.equalsIgnoreCase("float")) {                field.set(t, 127.6F);            } else {                System.out.println("不支持的数据类型：" + fieldName + " : " + fieldClassName);            }        }        return t;    }}

输出结果：

bigBoolean : BooleansmallBoolean : booleanbigLong : LongbigDouble : DoublebigInt : IntegerbigFloat : FloatsmallFloat : floatsmallLong : longsmallDouble : doublesmallInt : intdecimal : BigDecimalstring : StringTypeTest [bigBoolean=true, smallBoolean=true, bigLong=666666699999, bigDouble=10.2, bigInt=10, bigFloat=127.6, smallFloat=127.6, smallLong=666666699999, smallDouble=10.2, smallInt=10, decimal=1238.502, string=你好]