RestTemplate踩坑之 ContentType 自动添加字符集

写在前边

最近在写 OAuth2 对接的代码，由于授权服务器（竹云BambooCloud IAM）部署在甲方内网，所以想着自己 Mock 一下授权方的返回体，验证一下我的代码。我这才踩到了坑……

故事背景

选择的 Mock 框架是国产开源的 Moco（https://github.com/dreamhead/moco），先下载moco-runner-1.3.0-standalone.jar

再根据 Moco的官方文档（https://github.com/dreamhead/moco/blob/master/moco-doc/apis.md）和竹云对接文档配置了以下的mock配置：

BambooCloud-IAM-OAuth2-Moco.json

[
    {
        "description": "授权回调接口",
        "request": {
            "uri": "/idp/oauth2/authorize",
            "method": "get",
            "queries": {
                "client_id": "client-id-test",
                "redirect_uri": "http://localhost:8188/api/oauth2/callback",
                "response_type": "code"
            }
        },
        "redirectTo" : "http://localhost:8188/api/oauth2/callback?code=123456"
    },
    {
        "description": "获取token接口",
        "request": {
            "uri": "/idp/oauth2/getToken",
            "method": "post",
            "headers": {
                "content-type": "application/x-www-form-urlencoded"
            },
            "forms": {
                "client_id" : "client-id-test",
                "client_secret" : "client-secret-test",
                "grant_type" : "authorization_code",
                "code" : "123456"
            }
        },
        "response": {
            "json": {
                "access_token" : "123456789"
            }
        }
    },
    {
        "description": "获取用户信息接口",
        "request": {
            "uri": "/idp/oauth2/getUserInfo",
            "method": "get",
            "queries": {
                "client_id": "client-id-test",
                "access_token": "123456789"
            }
        },
        "response": {
            "json": {
                "spRoleList":["zhangsan"],
                "uid":"20190904124905344-F4BE-C2C9EFF24",
                "sorgId":null,
                "displayName":"张三",
                "loginName":"zhangsan",
                "secAccValid":1,
                "givenName":"729026",
                "pinyinShortName":null,
                "spNameList":["portalID","tyxtest","data","certificate","sysCertification","customer"],
                "employeeNumber":null
            }
        }
    }
]

启动 Moco

java -Dfile.encoding=UTF-8 -jar moco-runner-1.3.0-standalone.jar http -p 12306 -c BambooCloud-IAM-OAuth2-Moco.json

然后配置 SpringBoot 服务配置文件，这里就是给大家看看，不一定具备通用性：

#                 OAuth2配置                   #
################################################
#是否开启oauth2单点登录，true/false，默认不启用。
oauth2.sso.enabled=true
#授权方颁发的clientId
oauth2.sso.clientId=client-id-test
#授权方颁发的clientSecret
oauth2.sso.clientSecret=client-secret-test
#登录地址，授权方提供，示例：https://{host}:{port}/idp/oauth2/authorize
oauth2.sso.authUrl=http://localhost:12306/idp/oauth2/authorize
#获取token地址，授权方提供，示例：https://{host}:{port}/idp/oauth2/getToken
oauth2.sso.tokenUrl=http://localhost:12306/idp/oauth2/getToken
#获取用户信息地址，授权方提供，示例：https://{host}:{port}/idp/oauth2/getUserInfo
oauth2.sso.userInfoUrl=http://localhost:12306/idp/oauth2/getUserInfo
#授权回调地址，由【Nginx代理当前服务的地址 或 当前服务地址+"/api/oauth2/callback"】 组成，示例：https://{host}:{port}/api/oauth2/callback
oauth2.sso.redirectUri=http://localhost:8188/api/oauth2/callback

启动项目(8188端口，有两个api地址: /api/oauth2/sso 与 /api/oauth2/callback)，先通过程序 http://localhost:8188/api/oauth2/sso