【SAP HANA系列】SAP UI5上传图片 用XSJS存储在HANA中的方法

​
CREATE COLUMN TABLE "ZMATINAL"."ZIMAGE"(
    "NAME" NVARCHAR(100),
    "CONTENT" BLOB MEMORY THRESHOLD 1000,
    PRIMARY KEY (
        "NAME"
    )
) UNLOAD PRIORITY 5 AUTO MERGE;

​

​
        <u:FileUploader
            id="fileUploader"
            name="myFileUpload"
            uploadUrl="upload/"
            width="400px"
            tooltip="Upload your file to the local server"
            uploadComplete="handleUploadComplete"/>
        <Button
            text="Upload File"
            press="handleUploadPress"/>

​

​
        handleUploadPress: function(oEvent) {
            var oFileUploader = this.getView().byId("fileUploader");
            oFileUploader.upload();
        }

​

​
    var schema_name = "ZMATINAL";
    var filename = $.request.parameters.get('filename');    
    
    
    try {
        var conn = $.db.getConnection();
    
        var pstmt = conn.prepareStatement("INSERT INTO \"ZMATINAL\".\"ZIMAGE\" (NAME, CONTENT) VALUES (?, ?)");
    
    
        if($.request.entities.length>0) {
            
            //  Read in the posted image or binary data as an Array Buffer - you can use this to save as a BLOB
            var file_body = $.request.entities[0].body.asArrayBuffer();
    
            pstmt.setString(1,filename);  //设置文件名
            pstmt.setBlob(2,file_body);   //图片数据的数组缓冲区
            pstmt.execute();
    
        }
        else
        {
            $.response.setBody("没有请求条目");
        }
        pstmt.close();
        conn.commit();
        conn.close();
        $.response.contentType = "text/html";
        $.response.setBody("[200]:上传文件" + filename + "成功!");
    }
    catch(err)
    {
        if (pstmt !== null)
        {
            pstmt.close();
        }
        if (conn !== null)
        {
            conn.close();
        }
        $.response.contentType = "text/html";
        $.response.setBody("文件无法保存在数据库中，出现错误:" + err.message);
    }    

​