编辑smali文件

Question

我有一个想要添加日志的小代码。因为我不懂斯马利，所以我需要你的帮助。

原始的Java代码是：

    static HttpURLConnection createHttpURLConnection(String linkURL) {
        try {
            HttpURLConnection urlConnection = (HttpURLConnection) new URL(linkURL).openConnection();
            urlConnection.setRequestProperty("Accept-Encoding", HTTP.IDENTITY_CODING);
            urlConnection.setDoInput(true);
            return urlConnection;
        } catch (Exception e) {
            Log.e("URLConnection exception", e.toString());
            return null;
        }
    }

我的结果是小代码看起来像这样：

.method static createHttpURLConnection(Ljava/lang/String;)Ljava/net/HttpURLConnection;
    .locals 5
    .param p0, "linkURL"    # Ljava/lang/String;

    .prologue
    .line 64
    :try_start_0
    new-instance v1, Ljava/net/URL;

    invoke-direct {v1, p0}, Ljava/net/URL;-><init>(Ljava/lang/String;)V

    .line 65
    .local v1, "url":Ljava/net/URL;
    invoke-virtual {v1}, Ljava/net/URL;->openConnection()Ljava/net/URLConnection;

    move-result-object v2

    check-cast v2, Ljava/net/HttpURLConnection;

    .line 67
    .local v2, "urlConnection":Ljava/net/HttpURLConnection;
    const-string/jumbo v3, "Accept-Encoding"

    const-string/jumbo v4, "identity"

    invoke-virtual {v2, v3, v4}, Ljava/net/HttpURLConnection;->setRequestProperty(Ljava/lang/String;Ljava/lang/String;)V

    .line 68
    const/4 v3, 0x1

    invoke-virtual {v2, v3}, Ljava/net/HttpURLConnection;->setDoInput(Z)V
    :try_end_0
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_0} :catch_0

    .line 74
    .end local v1    # "url":Ljava/net/URL;
    .end local v2    # "urlConnection":Ljava/net/HttpURLConnection;
    :goto_0
    return-object v2

    .line 69
    :catch_0
    move-exception v0

    .line 70
    .local v0, "e":Ljava/lang/Exception;
    const-string/jumbo v3, "URLConnection exception"

    invoke-virtual {v0}, Ljava/lang/Exception;->toString()Ljava/lang/String;

    move-result-object v4

    invoke-static {v3, v4}, Landroid/util/Log;->e(Ljava/lang/String;Ljava/lang/String;)I

    .line 71
    const/4 v2, 0x0

    goto :goto_0
.end method

我想添加这一行(用Java显示)：

Log.e("creating new connection to", linkURL);

作为函数中的第一行，在try中

它在smali代码中会是什么样子呢？

谢谢!

Answer 1

下面是在try块的第一行添加了日志的smali代码。您还可以使用java2smali在线工具将java代码转换为smali。

.method static createHttpURLConnection(Ljava/lang/String;)Ljava/net/HttpURLConnection;
    .locals 5
    .param p0, "linkURL"    # Ljava/lang/String;

    .prologue
    .line 64
    :try_start_0
    const-string v0, "creating new connection to"

    invoke-static {v0, p0}, Landroid/util/Log;->e(Ljava/lang/String;Ljava/lang/String;)I

    new-instance v1, Ljava/net/URL;

    invoke-direct {v1, p0}, Ljava/net/URL;-><init>(Ljava/lang/String;)V

    .line 65
    .local v1, "url":Ljava/net/URL;
    invoke-virtual {v1}, Ljava/net/URL;->openConnection()Ljava/net/URLConnection;

    move-result-object v2

    check-cast v2, Ljava/net/HttpURLConnection;

    .line 67
    .local v2, "urlConnection":Ljava/net/HttpURLConnection;
    const-string/jumbo v3, "Accept-Encoding"

    const-string/jumbo v4, "identity"

    invoke-virtual {v2, v3, v4}, Ljava/net/HttpURLConnection;->setRequestProperty(Ljava/lang/String;Ljava/lang/String;)V

    .line 68
    const/4 v3, 0x1

    invoke-virtual {v2, v3}, Ljava/net/HttpURLConnection;->setDoInput(Z)V
    :try_end_0
    .catch Ljava/lang/Exception; {:try_start_0 .. :try_end_0} :catch_0

    .line 74
    .end local v1    # "url":Ljava/net/URL;
    .end local v2    # "urlConnection":Ljava/net/HttpURLConnection;
    :goto_0
    return-object v2

    .line 69
    :catch_0
    move-exception v0

    .line 70
    .local v0, "e":Ljava/lang/Exception;
    const-string/jumbo v3, "URLConnection exception"

    invoke-virtual {v0}, Ljava/lang/Exception;->toString()Ljava/lang/String;

    move-result-object v4

    invoke-static {v3, v4}, Landroid/util/Log;->e(Ljava/lang/String;Ljava/lang/String;)I

    .line 71
    const/4 v2, 0x0

    goto :goto_0
.end method