使用xpath或css查询从span检索文本

Question

我需要从以下span元素中检索文本，而不需要将其拆分为文本部分。

<span class="a-size-base review-text">I purchased this from Fry's Electronics.
<br/>
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The picture is quite good after tweaking the settings.  An HDMI feed from my PC results in very clear text with no distortion.  Be sure to turn down the sharpness to avoid artifacts around text.  I think this screen may offer 4:4:4 chroma subsampling based on the attached test image.  I'm very pleased with the viewing angles and the screen is definitely usable for more than just straight ahead viewing.
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I wasn't planning on using the Smart features, but the Netflix app works really well and is responsive enough to not become annoyed.  The wifi streaming playback is very smooth, but navigating the folder structure is horribly slow.  The interface insists on creating thumbnails for each movie file, which takes forever if you have a directory with many files.  I would much rather just see a detailed list without thumbnails.  When you finally do find your desired movie the playback is very good.  If you keep the directory contents small (~10 items or fewer) you may not have any problems.
<br/>
<br/>
The unit is very thin and light and setup was a breeze.  You just have to put in 4 screws to attach the base and then you're ready to go.  The power adapter comes with a "brick" style converter.  The remote is well laid out and the menus are easy to navigate without feeling cumbersome.
<br/>
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The stand is 8" deep x 22.25" wide.  The TV stands 26.5" from table top to the top of the bezel with stand attached.  The TV is 42.75" wide from outside bezel edge to outside bezel edge.
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Overall I'm very pleased with what this offers in the $400-500 range.  (I actually paid $398 but that was after some customer service adjustments at Fry's).
<br/>
<br/>
NOTE: If you see any strange distortion in the images it's likely a result of the camera, image compression, and resizing.  Some of the strange patterns seen in the images are not present when viewing in person.
</span>

Text='I purchased this from Fry's Electronics.'
Text=''
Text='The picture is quite good after tweaking the settings.  An HDMI feed from my PC results in very clear text with no distortion.  Be sure to turn down the sharpness to avoid artifacts around text.  I think this screen may offer 4:4:4 chroma subsampling based on the attached test image.  I'm very pleased with the viewing angles and the screen is definitely usable for more than just straight ahead viewing.'
Text=''
Text='I wasn't planning on using the Smart features, but the Netflix app works really well and is responsive enough to not become annoyed.  The wifi streaming playback is very smooth, but navigating the folder structure is horribly slow.  The interface insists on creating thumbnails for each movie file, which takes forever if you have a directory with many files.  I would much rather just see a detailed list without thumbnails.  When you finally do find your desired movie the playback is very good.  If you keep the directory contents small (~10 items or fewer) you may not have any problems.'
Text=''
Text='The unit is very thin and light and setup was a breeze.  You just have to put in 4 screws to attach the base and then you're ready to go.  The power adapter comes with a "brick" style converter.  The remote is well laid out and the menus are easy to navigate without feeling cumbersome.'
Text=''
Text='The stand is 8" deep x 22.25" wide.  The TV stands 26.5" from table top to the top of the bezel with stand attached.  The TV is 42.75" wide from outside bezel edge to outside bezel edge.'
Text=''
Text='Overall I'm very pleased with what this offers in the $400-500 range.  (I actually paid $398 but that was after some customer service adjustments at Fry's).'
Text=''
Text='NOTE: If you see any strange distortion in the images it's likely a result of the camera, image compression, and resizing.  Some of the strange patterns seen in the images are not present when viewing in person.'

我想检索一个没有破损的文本块。我正在使用这个xpath测试器http://www.freeformatter.com/xpath-tester.html

Answer 1

将整个元素转换为字符串:

string(
  //*[contains(concat( " ", @class, " a-size-base review-text" ), concat( " ", "review-text", " " ))]
)

请注意，这只适用于第一个与条件匹配的元素。在XPath2.0中，可以使用string-join()，它可以处理任意数量的元素：

string-join(   
    //*[contains(concat( " ", @class, " a-size-base review-text" ), concat( " ", "review-text", " " ))]/text(),
    ""
)