要向服务器发布内容,请使用以下代码:
var u1 = new XMLHttpRequest();
u1.open('POST', 'java/packagename');
u1.send(''); // <- string length of 0, a valid packagename in java.
var u2 = new XMLHttpRequest();
u2.open('POST', 'java/packagename');
u2.send('a'); // <- string length of 1, also a valid package name in java.
不幸的是,长度为0的字符串未发布。
答案 0 :(得分:0)
最后我自己找到了解决方案。
我将u1代码重写为
var h = value === null?'null':(v === ''?'empty-string':(v === undefined?'undefined':null));
if (h != null) {
u1.setRequestHeader('X-empty-body-interpret-as', h);
}
(我知道你们所有人的想法:嘿,您违反了RFC 6648,但目前我不在乎)
在控制器中,我这样读取标题:
@RequestMapping(value="java/packagename", method = RequestMethod.POST)
public ResponseEntity<Object> updatePackage(@RequestBody(required=false) String entityPackageNew, HttpServletRequest request) {
String interpretNullAs = request.getHeader("X-empty-body-interpret-as");
DP databaseMavenRevelation = entityManager.find(DP.class, databaseMavenRevelationId);
if (entityPackageNew == null) {
switch (interpretNullAs) {
case "empty-string":
databaseMavenRevelation.setEntityPackage("");
break;
case "null":
case "undefined":
databaseMavenRevelation.setEntityPackage(null);
break;
}
} else {
databaseMavenRevelation.setEntityPackage(entityPackageNew);
}
entityManager.persist(databaseMavenRevelation);
return new ResponseEntity<>(HttpStatus.OK);
}