40 lines
1.1 KiB
Java
40 lines
1.1 KiB
Java
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package com.hongliang.videotask.MapperProvider;
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import org.apache.ibatis.annotations.Param;
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import java.util.Map;
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public class NodeProvider {
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/**
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* 组合条件查询
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* @param condition 包含pageNum,pageSize,查询字段项,orderby
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* @return
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*/
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public String GetNodeList(Map<String,Object> condition){
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// System.out.println("condition:"+condition.toString());
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// 使用StringBuilder来拼接SQL
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StringBuilder sb=new StringBuilder();
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sb.append("select * from node where 1=1");
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//开如拼接查询条件
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if (condition.containsKey("nodename")){
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sb.append(" and nodename like concat('%', #{nodename},'%')");
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}
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//……如果有其他条件，就继续
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//如果有排序
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if (condition.containsKey("orderby")){
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sb.append(" order by #{orderby}");
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}
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//拼接分页
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if (condition.containsKey("offset") && condition.containsKey("pageSize")){
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sb.append(" limit #{offset},#{pageSize}");
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}
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//返回sql语句
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return sb.toString();
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}
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}
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