比request.env [‘RAW_POST_DATA’] = json_body？
我不知道这是否是您的意思,但您可以设置请求标头来表示
JSON：
describe "POST 'create'" do
it "should be successful" do
request.env["HTTP_ACCEPT"] = "application/json"
post 'create',:article => { :title => "Foo" }.to_json
response.should be_success
end
end
