JSONObject jsonObject = JSONObject.parseObject(Arrays.toString(bytes));报错 JSONObject jsonObject = JSONObject.parseObject(Arrays.toString(bytes));
时间: 2023-08-23 17:31:42 浏览: 115
`JSONObject.parseObject()`方法需要传入一个JSON字符串作为参数,但是`Arrays.toString()`方法是将一个数组转换成一个字符串,并不是将一个字节数组转换成一个JSON字符串。
如果您已经确定您所接收到的字节数组是一个JSON字符串的字节数组,可以直接将其转换为字符串,然后再使用`JSONObject.parseObject()`方法进行解析,例如:
```java
String jsonString = new String(bytes, StandardCharsets.UTF_8);
JSONObject jsonObject = JSONObject.parseObject(jsonString);
```
其中,`bytes`是您所接收到的字节数组,`StandardCharsets.UTF_8`是指定字符串编码格式的常量。通过将字节数组转换为字符串,再使用`JSONObject.parseObject()`方法解析该字符串,就可以得到一个`JSONObject`对象。
相关问题
DataBufferUtils.join(exchange.getRequest().getBody().defaultIfEmpty(factory.wrap(new EmptyByteBuf(factory.getByteBufAllocator())))) .flatMap(dataBuffer -> { byte[] bytes = new byte[dataBuffer.readableByteCount()]; dataBuffer.read(bytes); System.out.println(Arrays.toString(bytes)); String bodyString = new String(bytes, StandardCharsets.UTF_8); System.out.println(bodyString); JSONObject jsonObject = JSON.parseObject(bodyString); jsonObject.put(FieldUtils.USER_KEY, finalUserId); bodyString = jsonObject.toJSONString(); System.out.println(bodyString); System.out.println(Arrays.toString(bodyString.getBytes(StandardCharsets.UTF_8))); String finalBodyString = bodyString; exchange.getAttributes().put("POST_BODY", finalBodyString); DataBufferUtils.release(dataBuffer); Flux<DataBuffer> cachedFlux = Flux.defer(() -> { DataBuffer buffer = exchange.getResponse().bufferFactory().wrap(bytes); return Mono.just(buffer); }); ServerHttpRequest mutatedRequest = new ServerHttpRequestDecorator(exchange.getRequest()) { @Override public Flux<DataBuffer> getBody() { return cachedFlux; } }; return chain.filter(exchange.mutate().request(mutatedRequest).build()); });json转换有问题吗,怎么解决
这段代码中涉及到对请求体进行解析和转换成 JSON 对象,并且在修改后重新设置到请求体中。但是没有看到你提到的具体的问题,可以提供更详细的错误信息或者具体的问题描述吗?
另外,如果你使用的是 Spring WebFlux,也可以直接使用 `@RequestBody` 注解将请求体转换成对应的 Java 对象,避免手动解析和转换。像这样:
```java
@PostMapping("/api/user")
public Mono<User> createUser(@RequestBody User user) {
// 处理用户创建逻辑
}
```
for (SchemaRowRuleEo schemaRowRuleEo : schemaRowRuleList) { //获取行规则要素 String filterConditionList = schemaRowRuleEo.getFilterConditionList(); List<SchemaRowFilterCondition> schemaRowFilterConditions = JSONObject.parseArray(filterConditionList, SchemaRowFilterCondition.class); for (SchemaRowFilterCondition schemaRowFilterCondition : schemaRowFilterConditions) { String field = schemaRowFilterCondition.getField(); String camel = underlineToCamel(field); String key = schemaRowFilterCondition.getKey(); Field fieldsAndParentsField = fieldStream .filter(f -> StringUtils.equals(f.getName(), camel)) .findFirst() .orElseThrow(() -> new CustomException("大马猴来了", code)); Field f = object.getClass().getDeclaredField(camel); f.setAccessible(true); Object value = f.get(object); if (StringUtils.equals(key, value.toString()) && schemaRowRuleEo.getRowEditPermission()) { System.out.println("修改成功"); } else { throw new CustomException("大马猴来了", code); } } }优化这段java代码
这段 Java 代码可以做以下优化:
1. 使用 Lambda 表达式简化代码,如使用 Lambda 表达式替换 for 循环。
2. 避免重复获取对象的属性 Field,可以将其缓存到一个 Map 中,以便多次使用。
3. 将一些重复的字符串提取成常量,避免代码中出现重复的字符串。
下面是优化后的代码:
```
private static final String CODE = "大马猴来了";
public void optimizeCode(Object object, List<SchemaRowRuleEo> schemaRowRuleList) throws NoSuchFieldException, IllegalAccessException {
Map<String, Field> fieldMap = Arrays.stream(object.getClass().getDeclaredFields())
.collect(Collectors.toMap(Field::getName, field -> {
field.setAccessible(true);
return field;
}));
for (SchemaRowRuleEo schemaRowRuleEo : schemaRowRuleList) {
String filterConditionList = schemaRowRuleEo.getFilterConditionList();
List<SchemaRowFilterCondition> schemaRowFilterConditions = JSONObject.parseArray(filterConditionList, SchemaRowFilterCondition.class);
for (SchemaRowFilterCondition schemaRowFilterCondition : schemaRowFilterConditions) {
String field = schemaRowFilterCondition.getField();
String camel = underlineToCamel(field);
String key = schemaRowFilterCondition.getKey();
Field fieldAndParentField = fieldMap.get(camel);
Object value = fieldAndParentField.get(object);
if (StringUtils.equals(key, value.toString()) && schemaRowRuleEo.getRowEditPermission()) {
System.out.println("修改成功");
} else {
throw new CustomException(CODE, CODE);
}
}
}
}
private static String underlineToCamel(String underline) {
StringBuilder result = new StringBuilder();
String[] words = StringUtils.split(underline, '_');
for (int i = 0; i < words.length; i++) {
String word = words[i];
if (i == 0) {
result.append(word);
} else {
result.append(StringUtils.capitalize(word));
}
}
return result.toString();
}
```
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