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req.curPage当前页码, req.pageSize每页的条目数 PageRequest pageReques = PageRequest.of(req.curPage, req.pageSize); Specification<Enroll> spec = new Specification 阅读全文
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现象: "JSON parse error: Unrecognized token 'form': was expecting 'null', 'true', 'false' or NaN; nested exception is com.fasterxml.jackson.core.JsonPar 阅读全文
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<template> <div class="my-class"> <div class="title"> 我的班级 </div> <div class="all-class" v-if="!HasNoClass"> <el-row :gutter="17"> <transition-group a 阅读全文
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"vue": "^2.6.11",第一种方式:如果事件绑定的标签为原生H5标签不用.native修饰,如果事件绑定的标签为Vue组件那么click得用native修饰。 <div v-on:click="handle0"> <button @click.stop="handle1">点击1</but 阅读全文
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1,普通的网页中: // 设置默认图片 <img src="http://res.spreadwin.com/gmc38PE.jpg" alt="" onerror="this.src='images/default.png';this.onerror=null"> this.onerror=nul 阅读全文
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JS代码中: /* * 打开分享微信弹窗 */ function openDialog () { visible = true; var dialogDom = document.getElementById('dialog') dialogDom.style.display = 'flex' di 阅读全文
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<div class="up"> <img class="bg" src="bg.png"/> </div> .up{ width: 100%; height: 100%; position: relative; display: flex; /*justify-content: center;*/ 阅读全文
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.parrent { display: flex; //元素设置成flex布局 flex-direction: column; //控制parrent的子元素排列方向 height: 100vh; //最外层设置为屏幕的高度100% } .son { display:flex; flex-direc 阅读全文
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效果:删除按钮在背景图的上层 <div class="parrent"> <img class="parrent_img"/> //背景图 <img class="parrent_dele" src="../img/delete.png"/> //删除按钮 </div> CSS: .parrent 阅读全文
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Mac: adb logcat -d >/Users/z/android_log.txt windows: adb logcat -d > c:/b.log 阅读全文