1.將對(duì)象轉(zhuǎn)換為JSON字符串,返回值為一個(gè)JSON字符串
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try { return mapper.writeValueAsString(value); } catch (Exception e) { e.printStackTrace(); } return null ; } |
2. 將JSON字符串轉(zhuǎn)換為實(shí)體對(duì)象,返回值為實(shí)體對(duì)象
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public static <T> T toObject(String json, Class<T> valueType) { Assert.hasText(json); Assert.notNull(valueType); try { SimpleDateFormat dateFormat = new SimpleDateFormat( "yyyy-MM-dd HH:mm:ss" ); mapper.setDateFormat(dateFormat); return mapper.readValue(json, valueType); } catch (Exception e) { e.printStackTrace(); } return null ; |