Question

我尝试使用SendGrid sg = new SendGrid(sendGridAPIKEY);时遇到异常它给出了异常，因为发送网格在内部使用HttpClientBuilder.create().build();。我通过添加以下行解决了这个问题

DefaultHttpClient defaultHttpClient = new DefaultHttpClient();
Client sendGridClient = new Client(defaultHttpClient, false);
SendGrid sg = new SendGrid(sendGridAPIKEY, sendGridClient);

不推荐使用DefaultHttpClient。

但我想知道为什么HttpClientBuilder.create().build()行会出错。我正在使用JDK 1.8并遵循POM依赖

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.2</version>
    </dependency>

    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpcore</artifactId>
        <version>4.4.1</version>
    </dependency>

<!-- send Grid dependency -->
    <dependency>
        <groupId>com.sendgrid</groupId>
        <artifactId>sendgrid-java</artifactId>
        <version>4.0.1</version>
    </dependency>

例外：

Nov 06, 2017 10:15:26 PM org.apache.catalina.core.StandardWrapperValve invoke
    SEVERE: Servlet.service() for servlet [spring] in context with path [] threw exception [Handler processing failed; nested exception is java.lang.NoSuchMethodError: org.apache.http.impl.conn.CPool.setValidateAfterInactivity(I)V] with root cause
    java.lang.NoSuchMethodError: org.apache.http.impl.conn.CPool.setValidateAfterInactivity(I)V
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:176)
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.<init>(PoolingHttpClientConnectionManager.java:158)
        at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:973)
        at org.apache.http.impl.client.HttpClients.createDefault(HttpClients.java:58)
        at com.sendgrid.Client.<init>(Client.java:76)
        at com.sendgrid.Client.<init>(Client.java:56)
        at com.sendgrid.SendGrid.<init>(SendGrid.java:24)

sendgrid异常java.lang.NoSuchMethodError

0 个答案: