1、修改mysql字段類型
alter table 表名 change 字段名稱 字段名稱 字段類型[是否允許爲空];
2、生成隨機數,用來生成如名字唯一圖片名稱
UUID uuid = UUID.randomUUID();//生成隨機數
3、base64解碼
imgData,base64編碼數據
BASE64Decoder decoder = new BASE64Decoder();
byte[] imageData = decoder.decodeBuffer(imgData);
FileOutputStream fos = new FileOutputStream(imgPath+imgName.jpg);
fos.write(imageData);
fos.close();
問題1、
Map<String, String[]> params = request.getParameterMap();
for (String key : params.keySet()) {
System.out.println("key:"+key); //key爲0
String[] valueList = params.get(key);
String values = valueList[0]; //values:{"userId":"123","images":["base641","base642","base643"]}
JSONObject jsStr = JSONObject.fromObject(values);
userId = jsStr.getString("userId");
images = jsStr.getString("images");
JSONArray jsonArray = new JSONArray(images);
int size = jsonArray.length();