Question

我正在尝试使用rest client

访问网址

我的客户代码：

 public class ProductByListTestClient {

//  private final String USER_AGENT = "Mozilla/5.0";

public static void main(String[] args) {

    ProductByListTestClient http = new ProductByListTestClient();
    try {
        http.sendPost();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

// HTTP POST request
private void sendPost() throws Exception {

    String url = "http://localhost:7111/product.lookup.tobuylist/rest/product/productbuylist";
    URL obj = new URL(url);
    HttpURLConnection con = (HttpURLConnection) obj.openConnection();
    con.setRequestMethod("POST");
    con.setDoOutput(true);
   // con.setRequestProperty("User-Agent", USER_AGENT);
    con.setRequestProperty("Accept", "application/json");
    con.setRequestProperty("Content-Type", "application/json");
    String urlParameters = "{\"itemID\":F123}";

    // Send post request
    con.setDoOutput(true);
    DataOutputStream wr = new DataOutputStream(con.getOutputStream());
    wr.writeBytes(urlParameters);
    wr.flush();
    wr.close();

    int responseCode = con.getResponseCode();
    System.out.println("\nSending 'POST' request to URL : " + url);
    System.out.println("Post parameters : " + urlParameters);
    System.out.println("Response Code : " + responseCode);

    BufferedReader in = new BufferedReader(new InputStreamReader(
            con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();

    // print result
    System.out.println(response.toString());

}

}

ServletException的根本原因：

org.codehaus.jackson.JsonParseException: Unexpected character ('F' (code 70)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
 at [Source: weblogic.servlet.internal.ServletInputStreamImpl@186948; line: 1, column: 12]
    at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1432)
    at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:385)
    at org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(JsonParserMinimalBase.java:306)
    at org.codehaus.jackson.impl.Utf8StreamParser._handleUnexpectedValue(Utf8StreamParser.java:2084)
    at org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.java:549)
    Truncated. see log file for complete stacktrace

Answer 1

这是因为使用客户端在URL上发送了错误的JSON格式。只需检查您尝试通过URL发送的JSON数据。如果你得到这种例外＆＃34;意外的字符（＆＃39; F＆＃39;（代码70））：预期有效值＆＃34;。然后你只需要确保数据是正确的JSON格式！

意外的字符（＆＃39; F＆＃39;（代码70））：预期有效的值（数字，字符串，数组，对象，＆＃39;真＆＃39;，＆＃39; false＆＃39;或＆＃ 39; null＆＃39;）这是什么意思？

1 个答案: