在 MFP V8.0 中调用 Java Script Adapter 程序时出错

Question

我正在将我的应用程序从 MFP V 7.1 迁移到 MFP V 8.0。我在以下场景中构建数据对象并使用以下代码将请求从我的客户端发送到 MFP 适配器：

function SearchData(username,name,city){
    this.username = username;
    this.name = name;
    this.city = city;
}


searchData(){
    var searchData = new SearchData(getUserId(),name,city);
    var dataRequest = new WLResourceRequest('/adapters/MyAdapterName/searchEmployer', WLResourceRequest.GET);
    alert('there');
    dataRequest.send(searchData).then(
            function(response){
                console.log('response --> ' + response);
            },
            function(){
                console.log('error response --> ' );
            }
    );
}

下面是我的 java 脚本适配器中编写的代码：

function searchData(searchData){
    try{
        WL.Logger.info("Inside searchData() method.");
        var input = {
                method              : 'post',
                returnedContentType : 'json',
                path                : 'rest/search',
                body                : {
                    contentType : 'application/json;charset=utf-8',
                    content     : JSON.stringify(searchData)
                }

        };
        var response = MFP.Server.invokeHttp(input);
        return response;
    }catch(exception){
        WL.Logger.error("Inside searchData() method :: " + exception.message);
        throw exception;
    }
}

每次调用此方法时，都会调用失败函数。我也尝试使用 sendFormParameters 方法发送请求，但它返回打印以下错误：

worklight.js:9342 Uncaught Error: Invalid invocation of method WLResourceRequest.sendFormParameters; Form value must be a simple type.
logAndThrowError @ worklight.js:9342
encodeFormParameters @ worklight.js:9727
WLResourceRequest.sendFormParameters @ 
worklight.js:9685searchEmployer @ VM79:47
onclick @ index.html:1

Answer 1

当您传递的对象包含嵌套对象或属于函数类型时，就会出现该问题。

在您的情况下，您有多个 variables/functions 具有相同的名称 searchData、SearchData。我建议您将名称更改为更具描述性。

我已经尝试了以下并且运行成功

function SearchData(username,name,city){
    this.username = username;
    this.name = name;
    this.city = city;
}


function search(){
    var data = new SearchData(getUserId(), name, city);
    var request = new WLResourceRequest('/adapters/MyAdapterName/searchEmployer', WLResourceRequest.GET);
    request.send(searchData).then(function(response){
      console.log('response --> ', response);
    }, function(error){
      console.log('error response --> ', error);
    });
}

如果您在运行上面的代码之后仍然遇到问题，请与您的项目共享 link 或添加更多代码片段。

更新：

对于 Javascript 适配器通过 GET 变量接收它们的参数 params，params 是一个参数数组。

所以您需要在客户端更新您的代码如下：

function search(){
    var data = new SearchData(getUserId(), name, city);
    var request = new WLResourceRequest('/adapters/MyAdapterName/searchEmployer', WLResourceRequest.GET);
    request.setQueryParameter("params", [JSON.stringify(data)]);
    request.send().then(function(response){
      console.log('response --> ', response);
    }, function(error){
      console.log('error response --> ', error);
    });
}

由于传递给适配器的数据是一个字符串，您需要更新适配器程序以反映这一点，即删除 JSON.stringify

function searchData(payload){
    try{
        WL.Logger.info("Inside searchData() method.");
        var input = {
                method              : 'post',
                returnedContentType : 'json',
                path                : 'rest/search',
                body                : {
                    contentType : 'application/json;charset=utf-8',
                    content     : payload
                }

        };
        var response = MFP.Server.invokeHttp(input);
        return response;
    }catch(exception){
        WL.Logger.error("Inside searchData() method :: " + exception.message);
        throw exception;
    }
}

在 MFP V8.0 中调用 Java Script Adapter 程序时出错

Error while calling the Java Script Adapter procedure in MFP V8.0

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