2.7.0版本getContextPath方法：
```
protected String getContextPath(URL url) {
        String contextPath = url.getPath();
        return contextPath.endsWith("/") ? contextPath.substring(0,contextPath.length()-1) : contextPath;
    }
```
无法将方法置入web容器中，退回2.6.5版本的方法：
```
protected String getContextPath(URL url) {
        int pos = url.getPath().lastIndexOf("/");
        return pos > 0 ? url.getPath().substring(0, pos) : "";
    }
```
使用正常，两个方法应该不等价的。
ProviderConfig provider = new ProviderConfig();
        ServiceBuilder builder = new ServiceBuilder();
        builder.provider(provider);
        Assertions.assertSame(provider, builder.build().getProvider());
    }
    @Test
    void providerIds() {
        ServiceBuilder builder = new ServiceBuilder();
        builder.providerIds("providerIds");
        Assertions.assertEquals("providerIds", builder.build().getProviderIds());
    }
    @Test
    public void generic() throws Exception {
        ServiceBuilder builder = new ServiceBuilder();
        builder.generic(GENERIC_SERIALIZATION_DEFAULT);
        assertThat(builder.build().getGeneric(), equalTo(GENERIC_SERIALIZATION_DEFAULT));
        builder.generic(GENERIC_SERIALIZATION_NATIVE_JAVA);
        assertThat(builder.build().getGeneric(), equalTo(GENERIC_SERIALIZATION_NATIVE_JAVA));
        builder.generic(GENERIC_SERIALIZATION_BEAN);
        assertThat(builder.build().getGeneric(), equalTo(GENERIC_SERIALIZATION_BEAN));
    }
    @Test
    public void generic1() throws Exception {
        Assertions.assertThrows(IllegalArgumentException.class, () -> {
            ServiceBuilder builder = new ServiceBuilder();
            builder.generic("illegal").build();
        });
    }
    @Test
    public void Mock() throws Exception {