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使用LambdaQueryWrapper,QueryWrapper,lambda表达式,获取list集合的几种方式

2025年12月02日 Java 我要评论
#LambdaQueryWrapper,QueryWrapper,lambda表达式,获取list集合ProjectMsg projectMsg = new Pro

#LambdaQueryWrapper,QueryWrapper,lambda表达式,获取list集合

	ProjectMsg projectMsg = new ProjectMsg();
	projectMsg.setXqxmbm("123456789");

	List<ProjectMsg> list = projectMsgService
		            .list(Wrappers.<ProjectMsg>query()
					.lambda()
					.eq(ProjectMsg::getXqxmbm, projectMsg.getXqxmbm())
					.ne(ProjectMsg::getScbz, "1"));
	for (ProjectMsg msg : list) {
		System.out.println("msg = " + msg.toString());
		//msg = ProjectMsg(ywwym=1, csxmmc=null, csxmbm=null, xqxmbm=123456789, kyxmbm=null, fxmbm=null, zxmbm=null, xmmc=需求项目, fxmmc=, zxmmc=null, bzdwbm=null, bzdwmc=null, bzrgh=001, bzrmc=null, bzdw=渤海新能, bzr=张三, sssgs=浙江, ssxgs=杭州, sssgsbm=null, ssxgsbm=null, dydj=10kV, sysdgf=架空, htyj=null, gds=浙江供电所, rwxdsj=Fri Sep 25 00:00:00 CST 2020, rwzt=未进行, jhnd=2020, jxnd=null, zycd=重要, xmjb=一级, zcxz=私有, xmlx=一般, gcjd=需求编制, ywbm=null, gfbm=null, scbz=0)
	}

	LambdaQueryWrapper<ProjectMsg> lambda = Wrappers.<ProjectMsg>query().lambda();
	lambda.eq(ProjectMsg::getXqxmbm, projectMsg.getXqxmbm());
	lambda.ne(ProjectMsg::getScbz,"1");
	List<ProjectMsg> list1 = projectMsgService.list(lambda);
	for (ProjectMsg msg : list1) {
		System.out.println("msg1 = " + msg.toString());
		//msg1 = ProjectMsg(ywwym=1, csxmmc=null, csxmbm=null, xqxmbm=123456789, kyxmbm=null, fxmbm=null, zxmbm=null, xmmc=需求项目, fxmmc=, zxmmc=null, bzdwbm=null, bzdwmc=null, bzrgh=001, bzrmc=null, bzdw=渤海新能, bzr=张三, sssgs=浙江, ssxgs=杭州, sssgsbm=null, ssxgsbm=null, dydj=10kV, sysdgf=架空, htyj=null, gds=浙江供电所, rwxdsj=Fri Sep 25 00:00:00 CST 2020, rwzt=未进行, jhnd=2020, jxnd=null, zycd=重要, xmjb=一级, zcxz=私有, xmlx=一般, gcjd=需求编制, ywbm=null, gfbm=null, scbz=0)
	}

	QueryWrapper<ProjectMsg> wrapper1 = new QueryWrapper<>();
	LambdaQueryWrapper<ProjectMsg> wrapper2 = wrapper1.lambda().eq(ProjectMsg::getXqxmbm, projectMsg.getXqxmbm()).ne(ProjectMsg::getScbz, "2");
	List<ProjectMsg> list3 = projectMsgService.list(wrapper2);
	for (ProjectMsg msg : list3) {
		System.out.println("msg3 = " + msg.toString());
		//msg3 = ProjectMsg(ywwym=1, csxmmc=null, csxmbm=null, xqxmbm=123456789, kyxmbm=null, fxmbm=null, zxmbm=null, xmmc=需求项目, fxmmc=, zxmmc=null, bzdwbm=null, bzdwmc=null, bzrgh=001, bzrmc=null, bzdw=渤海新能, bzr=张三, sssgs=浙江, ssxgs=杭州, sssgsbm=null, ssxgsbm=null, dydj=10kV, sysdgf=架空, htyj=null, gds=浙江供电所, rwxdsj=Fri Sep 25 00:00:00 CST 2020, rwzt=未进行, jhnd=2020, jxnd=null, zycd=重要, xmjb=一级, zcxz=私有, xmlx=一般, gcjd=需求编制, ywbm=null, gfbm=null, scbz=0)
	}

	QueryWrapper<ProjectMsg> wrapper = new QueryWrapper<>();
	wrapper.eq("xqxmbm",projectMsg.getXqxmbm());
	wrapper.ne("scbz","1");
	List<ProjectMsg> list2 = projectMsgService.list(wrapper);
	for (ProjectMsg msg : list2) {
		System.out.println("msg2 = " + msg.toString());
		//msg2 = ProjectMsg(ywwym=1, csxmmc=null, csxmbm=null, xqxmbm=123456789, kyxmbm=null, fxmbm=null, zxmbm=null, xmmc=需求项目, fxmmc=, zxmmc=null, bzdwbm=null, bzdwmc=null, bzrgh=001, bzrmc=null, bzdw=渤海新能, bzr=张三, sssgs=浙江, ssxgs=杭州, sssgsbm=null, ssxgsbm=null, dydj=10kV, sysdgf=架空, htyj=null, gds=浙江供电所, rwxdsj=Fri Sep 25 00:00:00 CST 2020, rwzt=未进行, jhnd=2020, jxnd=null, zycd=重要, xmjb=一级, zcxz=私有, xmlx=一般, gcjd=需求编制, ywbm=null, gfbm=null, scbz=0)
	}
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