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index.html
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<html>
<head>
<body>
<p>ipfs API 测试</p>
<br/>
<h3>上传功能</h3>
<input type="file" id="upfile" />
<br/><br/>
<button id="upload">上传文件</button>
<textarea id="upRes" cols=80 disabled=true rows=3 offsetHeight&scrollHeight >显示调用结果</textarea>
<br/>
<br/>
<h3>下载功能</h3>
<label>输入哈希值</label>
<textarea id="downhash" cols=60></textarea>
<br /><br/>
<label>输入文件名(不输入默认保存为down.load)</label>
<textarea id="downname" cols=60></textarea>
<br /><br/>
<button id="download">下载文件</button>
<textarea id="downRes" cols=80 disabled=true rows=3 offsetHeight&scrollHeight >显示调用结果</textarea>
<script>
//上传文件的处理函数
document.querySelector('#upload').onclick = function() {
if (document.getElementById("upfile").files[0]==null){
alert("请先选择文件")
return
}
var formdata=new FormData();
formdata.append("file",document.getElementById("upfile").files[0],document.getElementById("upfile").files[0].name);
var xmlhttp;
if(window.XMLHttpRequest){
xmlhttp=new XMLHttpRequest();
}else{
xmlhttp= new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function(){
if(xmlhttp.readyState==4 && xmlhttp.status==200){
document.getElementById("upRes").value=xmlhttp.responseText;
}
else{
document.getElementById("upRes").value="正在上传";
}
}
xmlhttp.open("POST","http://119.28.52.50:5001/api/v0/add",true);
xmlhttp.send(formdata);
};
//下载文件的处理函数
document.querySelector('#download').onclick =function(){
if(document.getElementById("downhash").value==""){
alert("请输入哈希值")
return
}
var downfilename;
if(document.getElementById("downname").value==""){
downfilename="down.load";
}else{
downfilename=document.getElementById("downname").value;
}
var xmlhttp;
if(window.XMLHttpRequest){
xmlhttp=new XMLHttpRequest();
}else{
xmlhttp= new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.responseType = "blob";
xmlhttp.onreadystatechange=function(){
if(xmlhttp.readyState==4 && xmlhttp.status==200){
document.getElementById("downRes").value="下载完成";
var blob = this.response;
var reader = new FileReader();
reader.readAsDataURL(blob); // 转换为base64，
reader.onload = function (e) {
// 转换完成，创建一个a标签用于下载
var a = document.createElement('a');
a.download = downfilename;
a.href = e.target.result;
a.click();
}
}
else{
document.getElementById("downRes").value="正在下载";
}
}
var hash=document.getElementById("downhash").value;
xmlhttp.open("GET","http://119.28.52.50:5001/api/v0/cat?arg="+hash,true);
xmlhttp.send();
}
</script>
</body>
</head>
</html>