在后端接口中加上响应头Access-Control-Allow-Origin
比如我用SpringBoot写的一个接口
@GetMapping("/queryUserList")
public List<Member> queryMemberList(HttpServletResponse response){
List<Member> memberList= memberMapper.queryMemberList();
for (Member member : memberList) {
System.out.println(member);
}
response.addHeader("Access-Control-Allow-Origin","*");
return memberList;
}
}
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