package mysql.tool;
import java.util.List;
import mysql.model.LoanTransferDto;
public class MapperUtils {
public static String genBaseResultMap(Class clazz){
List fieldList = BeanUtil.getBeanPropertyList(clazz);
StringBuffer sb = new StringBuffer();
sb.append("\r\n");
int index = 0;
for (String fields : fieldList) {
String[] fieldArr = fields.split("`");
String columnStr = toColumn(fieldArr[1]);
if(index==0){
sb.append(" \r\n");
return sb.toString();
}
//生成删除语句
public static String genDeleteMap(String tableNamePreFix,Class clazz){
List fieldList = BeanUtil.getBeanPropertyList(clazz);
String tableName =(tableNamePreFix+toColumn(clazz.getSimpleName())).toUpperCase();
StringBuffer sb = new StringBuffer();
sb.append("\r\n");
sb.append(" delete from "+tableName+" where id = #{id,jdbcType=BIGINT}\r\n");
sb.append(" \r\n");
return sb.toString();
}
//生成插入语句
public static String genInsertMap(String tableNamePreFix,Class clazz){
List fieldList = BeanUtil.getBeanPropertyList(clazz);
String tableName =(tableNamePreFix+toColumn(clazz.getSimpleName())).toUpperCase();
StringBuffer sb = new StringBuffer();
sb.append("\r\n");
StringBuffer columnAppend = new StringBuffer();
StringBuffer valuesAppend = new StringBuffer();
int index = 0;
String idFields = "";
for (String fields : fieldList) {
String[] fieldArr = fields.split("`");
if(index>0){
String jdbcType = "varchar";
if(fieldArr[0].equals("int")||fieldArr[0].equals("Integer")){
jdbcType = "Integer";
}else if(fieldArr[0].equals("long")||fieldArr[0].equals("Long")){
jdbcType = "bigInt";
}else if(fieldArr[0].equals("Date")||fieldArr[1].contains("Time")||fieldArr[1].contains("Date")){
jdbcType = "TIMESTAMP";
}
columnAppend.append(" "+toColumn(fieldArr[1])+",\r\n");
valuesAppend.append(" #{"+fieldArr[1]+",jdbcType="+jdbcType.toUpperCase()+"},\r\n");
}else{
idFields = fieldArr[1];
}
index++;
}
columnAppend.deleteCharAt(columnAppend.lastIndexOf(","));
valuesAppend.deleteCharAt(valuesAppend.lastIndexOf(","));
sb.append(" insert into "+tableName+"("+columnAppend.toString()+") values("+valuesAppend+")\r\n");
sb.append(" \r\n");
return sb.toString();
}
//生成更新语句
public static String genUpdateMap(String tableNamePreFix,Class clazz){
List fieldList = BeanUtil.getBeanPropertyList(clazz);
String tableName =(tableNamePreFix+toColumn(clazz.getSimpleName())).toUpperCase();
StringBuffer sb = new StringBuffer();
sb.append("\r\n");
StringBuffer setAppend = new StringBuffer();
sb.append(" update "+tableName+" set\r\n");
int index = 0;
String idFields = "";
for (String fields : fieldList) {
String[] fieldArr = fields.split("`");
if(index>0){
String jdbcType = "varchar";
if(fieldArr[0].equals("int")||fieldArr[0].equals("Integer")){
jdbcType = "Integer";
}else if(fieldArr[0].equals("long")||fieldArr[0].equals("Long")){
jdbcType = "bigInt";
}else if(fieldArr[0].equals("Date")||fieldArr[1].contains("Time")||fieldArr[1].contains("Date")){
jdbcType = "TIMESTAMP";
}
String column = toColumn(fieldArr[1]);
setAppend.append(" "+column+" = #{"+fieldArr[1]+",jdbcType="+jdbcType.toUpperCase()+"},\r\n");
}else{
idFields = fieldArr[1];
}
index++;
}
setAppend.deleteCharAt(setAppend.lastIndexOf(","));
sb.append(setAppend.toString());
sb.append(" where "+toColumn(idFields)+" = #{"+idFields+",jdbcType=BIGINT}\r\n");
sb.append(" \r\n");
return sb.toString();
}
//生成更新语句
public static String genSelectByIdMap(String tableNamePreFix,Class clazz){
List fieldList = BeanUtil.getBeanPropertyList(clazz);
String tableName =(tableNamePreFix+toColumn(clazz.getSimpleName())).toUpperCase();
StringBuffer sb = new StringBuffer();
sb.append("\r\n");
return sb.toString();
}
public static String toColumn(String word) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < word.length(); i++) {
char c = word.charAt(i);
if (Character.isUpperCase(c)) {
sb.append("_"+c);
}else{
sb.append(c);
}
}
return sb.toString().toLowerCase();
}
public static void main(String[] args) {
System.out.println(genBaseResultMap(LoanTransferDto.class));
System.out.println(genDeleteMap("JGJ",LoanTransferDto.class));
System.out.println(genInsertMap("JGJ",LoanTransferDto.class));
System.out.println(genUpdateMap("JGJ",LoanTransferDto.class));
System.out.println(genSelectByIdMap("JGJ",LoanTransferDto.class));
//System.out.println(toColumn("loanType"));
}
}
生成后的效果：
delete from JGJ_LOAN_TRANSFER_DTO where id = #{id,jdbcType=BIGINT}
insert into JGJ_LOAN_TRANSFER_DTO( mid,
loan_no,
title,
bid_count,
bid_amount,
rate,
transfer_amount,
loan_cycle,
loan_cycle_attr,
update_time,
create_time
) values( #{mid,jdbcType=BIGINT},
#{loanNo,jdbcType=VARCHAR},
#{title,jdbcType=VARCHAR},
#{bidCount,jdbcType=BIGINT},
#{bidAmount,jdbcType=BIGINT},
#{rate,jdbcType=BIGINT},
#{transferAmount,jdbcType=BIGINT},
#{loanCycle,jdbcType=BIGINT},
#{loanCycleAttr,jdbcType=INTEGER},
#{updateTime,jdbcType=TIMESTAMP},
#{createTime,jdbcType=TIMESTAMP}
)
update JGJ_LOAN_TRANSFER_DTO set
mid = #{mid,jdbcType=BIGINT},
loan_no = #{loanNo,jdbcType=VARCHAR},
title = #{title,jdbcType=VARCHAR},
bid_count = #{bidCount,jdbcType=BIGINT},
bid_amount = #{bidAmount,jdbcType=BIGINT},
rate = #{rate,jdbcType=BIGINT},
transfer_amount = #{transferAmount,jdbcType=BIGINT},
loan_cycle = #{loanCycle,jdbcType=BIGINT},
loan_cycle_attr = #{loanCycleAttr,jdbcType=INTEGER},
update_time = #{updateTime,jdbcType=TIMESTAMP},
create_time = #{createTime,jdbcType=TIMESTAMP}
where ltid = #{ltid,jdbcType=BIGINT}