工作中常用转义字符

妖狐艹你老母 2023-06-21 14:23 43阅读 0赞

## MyBatis 中应用 ##

MyBatis Mapper 文件中 "<" 的替换符 <
    MyBatis Mapper 文件中 ">" 的替换符 >

<select id="getOrderDetails" parameterType="map" resultType="cn.yto.nabs.common.entity.OrderDetail">
        SELECT *
        FROM order_detail d
        WHERE 1=1
              AND d.order_create_time < #{orderCreateTimeEnd}
              LIMIT 300
    </select>

## special escape sequences ##

### 文档 ###

*  [special escape sequences][]

The Java programming language also supports a few special escape sequences for char and String literals:
     \b (backspace), \t (tab), \n (line feed), \f (form feed), \r (carriage return), \" (double quote), \' (single quote), and \\ (backslash).

### 应用 ###

private void createFile(String data){ 
            ReturnReceiveBody receiveBody=gson.fromJson(data, ReturnReceiveBody.class);
    
            //修改标签名称与结构
            XStream xStream=new XStream(new Xpp3Driver(new NoNameCoder()));
            xStream.autodetectAnnotations(true);
            String content=xStream.toXML(receiveBody);
            content=content.replaceAll("(?<=>)\\s+(?=<)", "").replaceAll("\\r\\n", "").replaceAll("&#xd", "")
                    .replaceAll(">", "");
    
            FileUtils fileUtils=new FileUtils();
            String fileName=UUID.randomUUID().toString() + genRandomNum(8);
    
            // 拼接内容
            buffer.append(content);
            // 换行
            buffer.append("\r\n");
            // 加一操作
            num.addAndGet(1);
            if(num.get()==total.get()){ 
                //写入文本
                boolean flag=fileUtils.writeFile(fileName, buffer.toString(), filePath);
                if (!flag){ 
                    LOGGER.info("文件保存失败");
                }else { 
                    LOGGER.info("文件保存成功");
                }
                // 置0
                num.getAndSet(0);
                buffer.setLength(0);
            }
    
        }

[special escape sequences]: https://docs.oracle.com/javase/tutorial/java/nutsandbolts/datatypes.html