通过java反射，封装bean

上周有一个封装javabean的流程，成员变量有好多，一路写if(!=null){setXXX} 真的好麻烦，有时候一不小心还会漏掉，很是麻烦，就想到用反射的方法自动进行拼装bean。

bean

package com.jiaotd.reflect;

/**
 * @author jiaotd@asiainfo.com
 * @since 2016年3月14日 上午9:12:47
 */
public class NewCustInfo {
    public String  dataId;
    public String  custId;
    public String  provCode;
    public String  regionId;
    public String  billId;
    public String  custName;
    public String  custCertType;
    public String  custCertNo;
    public String  custCertAddr;
    public String  certValiddate;
    public String  certExpdate;
    public String  gender;
    public String  nation;
    public String  birthday;
    public String  linkaddr;
    public String  linkman;
    public String  linkphone;
    public String  issuingAuthority;
    public String  fistGetDate;
    public String  validduration;
    public String  archiveNo;
    public String  state;
    public String  createDate;
    public String  authType;
    public String  notes;
    public String  ext1;
    public String  ext2;
    public String  ext3;
    public String  ext4;
    public String  ext5;
    public String  ext6;
    public String  ext7;
    public String  ext8;
    public String  ext9;
    public String  ext10;

    public NewCustInfo() {
    }

    public String getDataId() {
        return dataId;
    }

    public void setDataId(String dataId) {
        this.dataId = dataId;
    }

    public String getCustId() {
        return custId;
    }

    public void setCustId(String custId) {
        this.custId = custId;
    }

    public String getProvCode() {
        return provCode;
    }

    public void setProvCode(String provCode) {
        this.provCode = provCode;
    }

    public String getRegionId() {
        return regionId;
    }

    public void setRegionId(String regionId) {
        this.regionId = regionId;
    }

    public String getBillId() {
        return billId;
    }

    public void setBillId(String billId) {
        this.billId = billId;
    }

    public String getCustName() {
        return custName;
    }

    public void setCustName(String custName) {
        this.custName = custName;
    }

    public String getCustCertType() {
        return custCertType;
    }

    public void setCustCertType(String custCertType) {
        this.custCertType = custCertType;
    }

    public String getCustCertNo() {
        return custCertNo;
    }

    public void setCustCertNo(String custCertNo) {
        this.custCertNo = custCertNo;
    }

    public String getCustCertAddr() {
        return custCertAddr;
    }

    public void setCustCertAddr(String custCertAddr) {
        this.custCertAddr = custCertAddr;
    }

    public String getCertValiddate() {
        return certValiddate;
    }

    public void setCertValiddate(String certValiddate) {
        this.certValiddate = certValiddate;
    }

    public String getCertExpdate() {
        return certExpdate;
    }

    public void setCertExpdate(String certExpdate) {
        this.certExpdate = certExpdate;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getNation() {
        return nation;
    }

    public void setNation(String nation) {
        this.nation = nation;
    }

    public String getBirthday() {
        return birthday;
    }

    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }

    public String getLinkaddr() {
        return linkaddr;
    }

    public void setLinkaddr(String linkaddr) {
        this.linkaddr = linkaddr;
    }

    public String getLinkman() {
        return linkman;
    }

    public void setLinkman(String linkman) {
        this.linkman = linkman;
    }

    public String getLinkphone() {
        return linkphone;
    }

    public void setLinkphone(String linkphone) {
        this.linkphone = linkphone;
    }

    public String getIssuingAuthority() {
        return issuingAuthority;
    }

    public void setIssuingAuthority(String issuingAuthority) {
        this.issuingAuthority = issuingAuthority;
    }

    public String getFistGetDate() {
        return fistGetDate;
    }

    public void setFistGetDate(String fistGetDate) {
        this.fistGetDate = fistGetDate;
    }

    public String getValidduration() {
        return validduration;
    }

    public void setValidduration(String validduration) {
        this.validduration = validduration;
    }

    public String getArchiveNo() {
        return archiveNo;
    }

    public void setArchiveNo(String archiveNo) {
        this.archiveNo = archiveNo;
    }

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }

    public String getCreateDate() {
        return createDate;
    }

    public void setCreateDate(String createDate) {
        this.createDate = createDate;
    }

    public String getAuthType() {
        return authType;
    }

    public void setAuthType(String authType) {
        this.authType = authType;
    }

    public String getNotes() {
        return notes;
    }

    public void setNotes(String notes) {
        this.notes = notes;
    }

    public String getExt1() {
        return ext1;
    }

    public void setExt1(String ext1) {
        this.ext1 = ext1;
    }

    public String getExt2() {
        return ext2;
    }

    public void setExt2(String ext2) {
        this.ext2 = ext2;
    }

    public String getExt3() {
        return ext3;
    }

    public void setExt3(String ext3) {
        this.ext3 = ext3;
    }

    public String getExt4() {
        return ext4;
    }

    public void setExt4(String ext4) {
        this.ext4 = ext4;
    }

    public String getExt5() {
        return ext5;
    }

    public void setExt5(String ext5) {
        this.ext5 = ext5;
    }

    public String getExt6() {
        return ext6;
    }

    public void setExt6(String ext6) {
        this.ext6 = ext6;
    }

    public String getExt7() {
        return ext7;
    }

    public void setExt7(String ext7) {
        this.ext7 = ext7;
    }

    public String getExt8() {
        return ext8;
    }

    public void setExt8(String ext8) {
        this.ext8 = ext8;
    }

    public String getExt9() {
        return ext9;
    }

    public void setExt9(String ext9) {
        this.ext9 = ext9;
    }

    public String getExt10() {
        return ext10;
    }

    public void setExt10(String ext10) {
        this.ext10 = ext10;
    }

    @Override
    public String toString() {
        return "NewCustInfo [dataId=" + dataId + ", custId=" + custId
                + ", provCode=" + provCode + ", regionId=" + regionId
                + ", billId=" + billId + ", custName=" + custName
                + ", custCertType=" + custCertType + ", custCertNo="
                + custCertNo + ", custCertAddr=" + custCertAddr
                + ", certValiddate=" + certValiddate + ", certExpdate="
                + certExpdate + ", gender=" + gender + ", nation=" + nation
                + ", birthday=" + birthday + ", linkaddr=" + linkaddr
                + ", linkman=" + linkman + ", linkphone=" + linkphone
                + ", issuingAuthority=" + issuingAuthority + ", fistGetDate="
                + fistGetDate + ", validduration=" + validduration
                + ", archiveNo=" + archiveNo + ", state=" + state
                + ", createDate=" + createDate + ", authType=" + authType
                + ", notes=" + notes + ", ext1=" + ext1 + ", ext2=" + ext2
                + ", ext3=" + ext3 + ", ext4=" + ext4 + ", ext5=" + ext5
                + ", ext6=" + ext6 + ", ext7=" + ext7 + ", ext8=" + ext8
                + ", ext9=" + ext9 + ", ext10=" + ext10 + "]";
    }

    
}
View Code

 具体方法

需要注意的是

Method method = clazz.getMethod(key, String.class);

第一个参数是方法名，第二参数是一个多参数，即给方法需要的所有参数的类型。

本bean对象都是String类型的，所以可以这写，其余情景可以自行变形。

传入你要分装的bean对象和值

method.invoke(newcustinfo,map.get(s));

package com.jiaotd.reflect;

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


/**
 * @since 2016年3月14日 上午9:01:41
 */
public class CreateBean {
    
    public static List<String> paramBodyKey = new ArrayList<String>();
    static {
        paramBodyKey.add("dataId");
        paramBodyKey.add("custId");
        paramBodyKey.add("provCode");
        paramBodyKey.add("regionId");
        paramBodyKey.add("billId");
        paramBodyKey.add("custName");
        paramBodyKey.add("custCertType");
        paramBodyKey.add("custCertNo");
        paramBodyKey.add("custCertAddr");
        paramBodyKey.add("certValiddate");
        paramBodyKey.add("certExpdate");
        paramBodyKey.add("gender");
        paramBodyKey.add("nation");
        paramBodyKey.add("birthday");
        paramBodyKey.add("linkaddr");
        paramBodyKey.add("linkman");
        paramBodyKey.add("linkphone");
        paramBodyKey.add("issuingAuthority");
        paramBodyKey.add("fistGetDate");
        paramBodyKey.add("validduration");
        paramBodyKey.add("archiveNo");
        paramBodyKey.add("state");
        paramBodyKey.add("createDate");
        paramBodyKey.add("authType");
        paramBodyKey.add("notes");
        paramBodyKey.add("ext1");
        paramBodyKey.add("ext2");
        paramBodyKey.add("ext3");
        paramBodyKey.add("ext4");
        paramBodyKey.add("ext5");
        paramBodyKey.add("ext6");
        paramBodyKey.add("ext7");
        paramBodyKey.add("ext8");
        paramBodyKey.add("ext9");
        paramBodyKey.add("ext10");
    }
    
    
    public static Map<String, String> padBean(String str){
        Map<String, String> map = new HashMap<String,String>();
        String[] strs = str.split("\|");
        for(int i=0;i<strs.length;i++){
            String key = paramBodyKey.get(i);
            String value = strs[i];
            map.put(key, value);
        }
        return map;
    }
    
    public static NewCustInfo getbean(Map<String, String> map){
        NewCustInfo newcustinfo = new NewCustInfo();
        Class clazz = NewCustInfo.class;
        for(String s : map.keySet()){
            String key ="set" + s.substring(0, 1).toUpperCase()+s.substring(1, s.length());
            try {
                Method method = clazz.getMethod(key, String.class);
                method.invoke(newcustinfo,map.get(s));
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        
        return newcustinfo;
    }
    
    public static void main(String[] args) {
        String str = "||XX|||XX|XX|XX|XX||XX|XX|XXX||||XX|||||XX||XX||XX|XX|XX|XX|XX|XX||XX|XX|";
        Map<String, String> map = padBean(str);
        System.out.println(getbean(map));
        
    }
}
View Code
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原文地址：https://www.cnblogs.com/Yiran583/p/5275121.html