title: "We can not access the URL currently."
body: <p>I call google api when the return of "We can not access the URL currently." But the resources must exist and can be accessed.</p>
  
  <p><a href="https://vision.googleapis.com/v1/images:annotate" rel="noreferrer">https://vision.googleapis.com/v1/images:annotate</a></p>
  
  <p>request content:</p>
  
  <pre><code>{
    "requests": [
      {
        "image": {
          "source": {
            "imageUri": "http://yun.jybdfx.com/static/img/homebg.jpg"
          }
        },
        "features": [
          {
            "type": "TEXT_DETECTION"
          }
        ],
        "imageContext": {
          "languageHints": [
            "zh"
          ]
        }
      }
    ]
  }
  </code></pre>
  
  <p>response content:</p>
  
  <pre><code>{
    "responses": [
      {
        "error": {
          "code": 4,
          "message": "We can not access the URL currently. Please download the content and pass it in."
        }
      }
    ]
  }
  </code></pre>