jsonrpc eth_getBalance 失败

Posted 2023-02-16

【中文标题】jsonrpc eth_getBalance 失败

【英文标题】：jsonrpc eth_getBalance fails

【发布时间】：2021-08-13 00:56:15

【问题描述】：

运行以下代码时出现未定义的错误，并且 id 为空： Geth 在端口 3334 上运行，并在 rinkeby 网络上运行。任何想法为什么这会失败？运行此代码的输出是 jsonrpc:2.0;编号：空；错误：[对象对象]；代码：未定义；消息：未定义；

$.ajax(
            headers:  
                        'Accept': 'application/json',
                        'Content-Type': 'application/json' 
            ,
            url : "http://localhost:3334",
            type : 'POST',
            data : 
                "jsonrpc":"2.0",
                "method":"eth_getBalance",
                "params":["0xEa0ce8c5EC357a5C6a1bF4bfC9bfA9acB4896B4e","latest"],
                "id":"1"
            ,
            dataType : "json",
            success : function(result) 
                if (result['result'])
                    console.log("Balance ="+ result['result']);
                else
                var theText="";
                for (property in result) 
                    theText += property + ':' + result[property]+'; ';
                    
                    console.log(theText);
                for (property in result['error']) 
                    theText += property + ':' + result[property]+'; ';
                    
                    console.log(theText);   
                
    
            ,
            error: function (xhr, ajaxOptions, thrownError) 
                    console.log("error");
           
        );

【参考方案1】：

好吧，我放弃了 ajax 选项。 我找到了一种使用 XMLHttpRequest 拨打电话的方法

const xhr = new XMLHttpRequest();

// listen for `load` event
xhr.onload = () => 

    // print JSON response
    if (xhr.status >= 200 && xhr.status < 300) 
        // parse JSON
        const response = JSON.parse(xhr.responseText);
        console.log(response);
        var temp = parseInt(response['result']);
        var amount = temp / Math.pow(10,18) 
        console.log("Amount in ether ="+amount);

        
    
;

// create a JSON object
const json = 
                "jsonrpc":"2.0",
                "method":"eth_getBalance",
                "params":[0xEa0ce8c5EC357a5C6a1bF4bfC9bfA9acB4896B4e,"latest"],
                "id":"1"
            ;

// open request
xhr.open('POST', 'http://localhost:3334');

// set `Content-Type` header
xhr.setRequestHeader('Content-Type', 'application/json');

// send request with JSON payload
xhr.send(JSON.stringify(json));