tomcat 部署swagger 请求到后端乱码

问题：

 @ApiOperation(value = "", notes = "查看关键词列表")
    @ResponseBody
    @RequestMapping(value = "getByKeywords", method = RequestMethod.GET, produces = "application/json;charset=utf-8")
    Result<Page<List<AplQuestionAnswer>>> listQuestionAndAnswers(
            @ApiParam(required = true, name = "keywords", value = "关键词") @RequestParam(value = "keywords", required = true) String[] keywords,
            @ApiParam(required = false, name = "pageSize", value = "页大小", defaultValue = "20") @RequestParam(value = "pageSize", required = false, defaultValue = "20") int pageSize,
            @ApiParam(required = false, name = "pageIndex", value = "当前页", defaultValue = "0") @RequestParam(value = "pageIndex", required = false, defaultValue = "0") int pageIndex
    ) {

        //如果为空则查询全部
        if (keywords == null || keywords.length == 0) {
            keywords = new String[]{};
        }

前端通过swagger的方式进行获取：（注意数组在swagger中直接用回车进行获取）

问题定位：

　　平台码为iso-8859-1造成的，在拿到是开之后先进行解码并转码。

最终解决方式：

public static String decodeAndTrim(String str) throws UnsupportedEncodingException {
        if (str == null) {
            return null;
        }
        String encoding = TemplateStringUtil.getEncoding(str);
        if ("ISO-8859-1".equals(encoding)) {
            str = new String(str.getBytes("ISO-8859-1"), "utf-8");
        }
        return str.trim();
    }

尝试过的方案：（同事通过这种方式解决了，但是我这里没有）

在tomcat 的JVM option中增加

-Dfile.encoding=UTF-8

和tomcat中的配置

    <Connector executor="tomcatThreadPool"
               port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />

中增加  URIEncoding="UTF-8"

    <Connector executor="tomcatThreadPool"
               port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443"   URIEncoding="UTF-8"/>