比如一个接口，既想实现请求参数是application/json,又想实现form提交，改怎么做呢？用postman去测试，发现不可能做到两全其美。
我有一个方法，就是不用requestbody，也可以实现json解析，首先是新建一个包装类，这个类可以重复读inputstream里面的东西。
如果加了requestbody,就无法用form提交，如果去掉requestbody 那么就无法获取到json里面的值，因为全是null.
class BodyReaderHttpServletRequestWrapper extends HttpServletRequestWrapper {
private final byte[] body;
public BodyReaderHttpServletRequestWrapper(HttpServletRequest request)
throws IOException {
super(request);
//编码默认iso-8859-1
body = StreamUtil.readBytes(request.getReader(), "utf-8");
}
@Override
public BufferedReader getReader() throws IOException {
return new BufferedReader(new InputStreamReader(getInputStream()));
}
@Override
public ServletInputStream getInputStream() throws IOException {
final ByteArrayInputStream bais = new ByteArrayInputStream(body);
return new ServletInputStream() {
@Override
public int read() throws IOException {
return bais.read();
}
@Override
public boolean isFinished() {
return false;
}
@Override
public boolean isReady() {
return false;
}
@Override
public void setReadListener(ReadListener listener) {
}
};
}
}
然后再从inputstream里面拿东西就OK拉
public static JSONObject receivePost(HttpServletRequest request) throws IOException, UnsupportedEncodingException {
// 读取请求内容
BufferedReader br = new BufferedReader(new InputStreamReader(request.getInputStream()));
String line = null;
StringBuilder sb = new StringBuilder();
while ((line = br.readLine()) != null) {
sb.append(line);
}
//将json字符串转换为json对象
JSONObject json=JSONObject.parseObject(sb.toString());
return json;
}
最后在action里面做判断就OK了，大功告成。
if(servletRequest.getContentType().equals("application/json"))
{
servletRequest= new BodyReaderHttpServletRequestWrapper( servletRequest);
JSONObject d= receivePost(servletRequest);
}
else
{
Map<String,String[]> map= servletRequest.getParameterMap();
}