dojo + jersey 上传图片到数据库

很气愤的一件事，我刚刚写好的一篇博客，点击提交时，博客园的程序报错！白写了！现在大家看到这篇是减缩版，代码是可以使用的，只是有些解释型语言，我不想在重复一遍了，希望博客园的管理者好好管理，不要再出现类似问题了。

使用jersey发布上传图片服务需要依赖两个jar包：jersey-multiart.jar，mimepull.jar

前端html：

<form id="messageform" class="messagetable" enctype="multipart/form-data" method="post" >
        <div class="messagebody">
            <textarea name="message" rows="5" cols="5" data-dojo-attach-point="messageNode"></textarea>
            <input type="hidden" name="ids" id="checkedids">
            <input type="hidden" name="terminalid" id="terminalid">
        </div>
        <input name="file" type="file" accept="image/*" single name="file" data-dojo-attach-point="fileNode" data-dojo-attach-event="onchange: onFileLoad">
        <img data-dojo-attach-point="imgNode" src="" >
        <input type="submit" value="上传图片" data-dojo-attach-event="onclick:onUploadImg">
        <input type="button" value="发送" data-dojo-attach-event="onclick:onSendMessage">
    </form>

javascript：

uploadImg: function(form){
                    var myhostname = "http://" + window.location.hostname + ":"
                    + window.location.port;
                    var url = myhostname + "/TrackingSys/services/ConductControl/uploadImg";
                    
                    form.ids = this.getStrIds();
                    console.log(form);
                    iframe(url, {
                        form: form,
                        //url: url,
                        method: 'POST',
                        handleAs: "html"
                    }).then(lang.hitch(this, 'uploadSuccess'), lang.hitch(this, 'err'));
                },
                
                uploadSuccess: function(res){
                    var contentNode = res.childNodes[0];
                    if (contentNode){
                        var content = contentNode.textContent? contentNode.textContent : contentNode.innerText;
                        var data = JSON.parse(content);
                        console.log(data);
                    }
                },

 

后台：注意返回的格式

@POST @Path("/uploadImg")
    @Consumes(MediaType.MULTIPART_FORM_DATA)  // 消费注解必须是这个类型
    @Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
    public String uploadImg(@FormDataParam("file") InputStream uploadedStream,
            @FormDataParam("ids") String ids, @FormDataParam("terminalid") String terminalid){
    
        String[] checkIds = ids.split(",");
        String result = dao.sendImgToTerminal(terminalid, uploadedStream, checkIds);
        String re = "<html>{\"result\":\"" + result + "\"}</html>";
        return re;
    }

插入图片部分：不能使用被注释掉的那种写法

rpt = conn.prepareStatement(sql);
        BufferedInputStream bs = new BufferedInputStream(picData);
        ByteArrayOutputStream outputStream=new ByteArrayOutputStream();
        
        byte[] bytes = new byte[1024];
        int len=picData.read(bytes);
        while (len != -1) {
            outputStream.write(bytes, 0, len);
            len=picData.read(bytes);
        }
        rpt.setBytes(1, outputStream.toByteArray());
        //rpt.setBinaryStream(1, picData,picData.available() );
        rpt.setInt(2, imageId);
        rpt.executeUpdate();
posted @ 2013-03-27 15:00  木的树  阅读(3527)  评论(6)  编辑  收藏  举报