Question

如何用if判断给定String字符串？

String queryHql = "from PolicyInfo as policy where policy.title like :title or policy.content like :content";
意思是如何加IF判断title 如果为空，我不执行policy.title like :title or
同理content为空不执行or policy.content like :content
都为空不执行where policy.title like :title or policy.content like :content
请问怎么实现，以前用mybaitis有if判断，现在用hibernate反而不会了。

Answer 1

String queryHql = "from PolicyInfo as policy

if(title != null ){
queryHql +="policy.title like :title ";
}
if(content != null){
if(title != null ){
queryHql +="or policy.content like :content"";
}else(
queryHql +="where policy.content like :content";
)

}