使用七牛云存储图片或文件并回显
作者：互联网
首先是后台的页面,也就是上传文件的Controler
/**
* 上传文件到七牛云
*
* @throws IOException
*/
@RequestMapping("upload.json")
@ResponseBody
public Result upload(MultipartFile file) throws IOException {
/**
* 构造一个带指定Zone对象的配置类
* 华东 : Zone.zone0()
* 华北 : Zone.zone1()
* 华南 : Zone.zone2()
* 北美 : Zone.zoneNa0()
*/
Configuration cfg = new Configuration(Zone.zone0());
// ...其他参数参考类注释
UploadManager uploadManager = new UploadManager(cfg);
// ...生成上传凭证，然后准备上传
String accessKey = "UdzkULHdDaACW4DfIOwKJv7-gSgKXtPVWzIY6Iah";
String secretKey = "6G_2SMK2J2cR7yUTRrp2cX-zLUB0ejbx6Rrdu46P";
//指定储存空间
String bucket = "blog";
// 默认不指定key的情况下，以文件内容的hash值作为文件名
String key = null;
//初始化一个图片路径
String imgUrl = "";
try {
// 数据流上传
InputStream byteInputStream = file.getInputStream();
Auth auth = Auth.create(accessKey, secretKey);
String upToken = auth.uploadToken(bucket);
try {
Response response = uploadManager.put(byteInputStream, key, upToken, null, null);
// 解析上传成功的结果
DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
System.out.println(putRet.key);
System.out.println(putRet.hash);
//由七牛云返回的一个文件路径
imgUrl = putRet.hash;
} catch (QiniuException ex) {
Response r = ex.response;
System.err.println(r.toString());
try {
System.err.println(r.bodyString());
} catch (QiniuException ex2) {
// ignore
}
}
} catch (UnsupportedEncodingException ex) {
// ignore
}
//这里返回的imgurl是七牛云返回的一个图片的url 可以直接放在img标签中使用
return Result.success("成功").add("imgUrl", "http://pcvisishu.bkt.clouddn.com/" + imgUrl);
}Result代码
public class Result {
//响应的状态消息
private String msg;
//响应的状态码 200是成功 500是失败
private Integer status;
//数据对象
private Map<String, Object> data = new HashMap<String, Object>();
public Map<String, Object> getData() {
return data;
}
public void setData(Map<String, Object> data) {
this.data = data;
}
public static Result success(String msg) {
Result result = new Result();
result.setStatus(200);
result.setMsg(msg);
return result;
}
public Result add(String key, Object value) {
this.getData().put(key, value);
return this;
}
public static Result success() {
Result result = new Result();
result.setStatus(200);
return result;
}
public static Result error(String msg) {
Result result = new Result();
result.setStatus(500);
result.setMsg(msg);
return result;
}
public Result(String msg, Integer status) {
this.msg = msg;
this.status = status;
}
public Result(String msg, Integer status, Map<String, Object> data) {
this.msg = msg;
this.status = status;
this.data = data;
}
public Result() {
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
public Integer getStatus() {
return status;
}
public void setStatus(Integer status) {
this.status = status;
}
}前台页面 回显图片
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>文章编辑</title>
</head>
<body>
<div class="wrap">
<!-- 头部 -->
<div id="header">
<c:import url="../head.jsp"></c:import>
</div>
<!-- 左侧菜单和主体内容 -->
<div class="grid-1-7" style="flex: 1;margin:0;">
<!-- 左侧菜单 -->
<c:import url="../menu.jsp"></c:import>
<!-- 面包屑导航和主体内容 -->
<div class="content">
<!--面包屑导航-->
<div class="content-header">
<div class="breadcrumb">
<span>文章管理</span>
<span class="divider">/</span>
<span class="active">文章编辑</span>
</div>
</div>
<!--全部主体内容-->
<div class="list-content">
<!--块元素-->
<div class="block">
<!--修饰块元素名称-->
<div class="banner">
<p class="tab fixed">文章编辑<span class="hint">Article Editors</span></p>
</div>
<!--正文-->
<div class="main">
<!--表单-->
<form id="form" action="" method="">
<input type="hidden" name="id" value="${id}"/>
<!--输入框-->
<div class="unit">
<div class="left">
<p class="subtitle">标题</p>
</div>
<div class="right">
<input type="text" class="text" name="title" data-type="必填" placeholder="请输入文章标题"
value="${article.title}"/>
</div>
<!--清浮动-->
<span class="clearfix"></span>
</div>
<!--分割线-->
<p class="divider"></p>
<!--下拉选择框-->
<div class="unit">
<div class="left">
<p class="subtitle">所属分类</p>
</div>
<div class="right">
<select id="type_id" name="typeId">
<c:forEach items="${typeList}" var="typeList" varStatus="status">
<option value="${typeList.id}"
<c:if test="${article.typeId==typeList.id}">selected</c:if>
>${typeList.typeName}</option>
</c:forEach>
</select>
</div>
<!--清浮动-->
<span class="clearfix"></span>
</div>
<!--分割线-->
<p class="divider"></p>
<!--文章封面-->
<div class="unit">
<div class="left">
<p class="subtitle">封面</p>
</div>
<div class="right">
<!--上传按钮-->
<a href="javascript:;">
<!-- 图片承载容器 -->
<label id="container" for="upload"
style="display: inline-block; width:132px;height:74px;">
<c:choose>
<c:when test="${empty article.imagePath}">
<img src="${pageContext.request.contextPath}/static/javaex/pc/images/default.png"
width="100%" height="100%"/>
</c:when>
<c:otherwise>
<img src="${article.imagePath}" width="100%" height="100%"/>
</c:otherwise>
</c:choose>
</label>
<input type="file" class="hide" id="upload"
accept="image/gif, image/jpeg, image/jpg, image/png"/>
</a>
<input type="hidden" id="imagePath" name="imagePath" value=""/>
</div>
<!--清浮动-->
<span class="clearfix"></span>
</div>
<!--分割线-->
<p class="divider"></p>
<!--文本域-->
<div class="unit">
<div class="left">
<p class="subtitle">内容</p>
</div>
<div class="right">
<div id="edit" class="edit-container"></div>
<input type="hidden" id="content" name="content" value="${article.content}"/>
<input type="hidden" id="describeArticle" name="describeArticle"
value="${article.describeArticle}"/>
</div>
<!--清浮动-->
<span class="clearfix"></span>
</div>
<!--分割线-->
<p class="divider"></p>
<!--提交按钮-->
<div class="unit">
<div style="margin-left: 200px;">
<!--表单提交时，必须是input元素，并指定type类型为button，否则ajax提交时，会返回error回调函数-->
<input type="button" id="return" class="button no" value="返回"/>
<input type="button" id="submit" class="button yes" value="保存"/>
</div>
<!--清浮动-->
<span class="clearfix"></span>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
<script>
javaex.select({
id: "type_id",
isSearch: false
});
javaex.upload({
type: "image",
url: "upload.json", // 请求路径
id: "upload", // <input type="file" />的id
param: "file", // 参数名称，SSM中与MultipartFile的参数名保持一致
dataType: "url", // 返回的数据类型：base64 或 url
callback: function (rtn) {
// 后台返回的数据
if (rtn.status == 200) {
var imgUrl = rtn.data.imgUrl;
$("#container img").attr("src", imgUrl);
$("#imagePath").val(imgUrl);
} else {
javaex.optTip({
content: rtn.msg,
type: "error"
});
}
}
});
var content = '${article.content}';
javaex.edit({
id: "edit",
image: {
url: "upload.json", // 请求路径
param: "file", // 参数名称，SSM中与MultipartFile的参数名保持一致
dataType: "url", // 返回的数据类型：base64 或 url
rtn: "rtnData", // 后台返回的数据对象，在前面页面用该名字存储
imgUrl: "data.imgUrl" // 根据返回的数据对象，获取图片地址。 例如后台返回的数据为：{code: "000000", message: "操作成功！", data: {imgUrl: "1.jpg"}}
},
content: content, // 这里必须是单引号，因为html代码中都是双引号，会产生冲突
callback: function (rtn) {
console.log(rtn);
$("#content").val(rtn.html);
$("#describeArticle").val(rtn.text.substring(0, 100));
}
});
$("#return").click(function () {
history.back();
});
$("#submit").click(function () {
$.ajax({
url: "save.json",
type: "POST",
dataType: "json",
data: $("#form").serialize(),
success: function (rtn) {
if (rtn.status == 200) {
javaex.optTip({
content: rtn.msg
});
// 建议延迟加载
setTimeout(function () {
// 跳转页面
window.location.href = "${pageContext.request.contextPath}/article/list_normal.action";
}, 1000);
} else {
javaex.optTip({
content: rtn.msg,
type: "error"
});
}
}
});
});
</script>
</html>标签：status,存储,七牛云,String,回显,rtn,Result,msg,public 来源： https://www.cnblogs.com/blackmlik/p/12075003.html